1 English question Explain the reason Thank you

a keep distance.

Here the object clause part is actually the subjunctive mood, he required (that) we (should) keep distance from each otherThe should here is omitted. require means requirement, the object clause is the content of the requirement, and this content is a subjective idea, so the object clause part should be expressed in a subjunctive mood.

In this case, the structure of should + do(be) is used to reflect the subjunctive mood, and Should can be omitted. Should is often omitted from the options of this multiple-choice question, so be careful.

When choosing a require+that, followed by a clause, the verb is archetypal.

keep from is a fixed collocation that translates to "keep...

Pick B answer. required is the past tense, tense agreement principle, a, c can't, and we is the plural meaning of us, d can't, so choose b. Meaning: He asks us to keep our distance from each other.

a, because the semantic words must be kept at a distance, then it is a b

But required requires virtual then only c

It should be (should) + verb, but shou can be saved.

;is touching the top, and the bridge is suspended.

It's a verb, and it's obvious to fill in the preposition here.

The top is not in touch, and the two ends of the bridge are grounded, and the over has a metaphorical meaning of an arc-shaped extension suspended in the air.

This is customary usage In fact, no foreigner will say above, just like the Chinese say: the bridge is on the water, but not say: the bridge is higher than the position of the water.

over in. Above, the bridge is generally used over the water

To sum up, choose D

Never can't.

be make of ......material production.

Been was born Since is the signatory word of the present perfect tense, and the general structure is: perfect tense + since + simple past tense.

won't pass unless ......Otherwise, ......, assuming tone, simple present tense + future tense.

changed in the past few years is also a marker word in the present perfect tense.

As can be seen from the following sentence, "citizen" should be filled in here, and all citizens support him.

Adverbs modify verbs, primarily.

talking entered.stop doing.

forget to do sth.

Meaning: several times. b, sometimes, c for some time, d for some time in the future.

Would you like to try again? another does not specifically refer to the other time, b specifically refers to the other of the two, so use c

They have equal pressure on the horizontal ground, and it is known that P A chooses B if they have equal pressure on the horizontal ground

If the p-formazan is known< P B < P C choose A< P >