The monthly exam is over, and there are a few questions to ask

b---what would you wish to do if you were to be a college student again?

Subjunctive voice, "If you were to be a college student again, what would you want to do?" ”

Answer: "......."but i wish i___biology when i was a college student.The adverbial word for study is when i was a college student, which is a time in the past and should be b. Past Perfect Tense.

The condition is that it was before some time in the past.

The answer was "It's hard to say, if only I had studied biology in college." ”

aThis is an assumption about past facts, and the assumption is to be expressed in a subjunctive mood. And because the conversation is about the past, the past tense is used.

A subjunctive mood means that the past is virtual when i was a college student and regrets that he didn't learn biology well when he was a college student, so it is a past virtual using the past perfect tense.

The usage of b subjunctive mood is in the present tense, so studied is used

c.The clause is not in the past tense but is a contemplative mood that expresses an unattainable wish while the speaker is talking.

b I don't think it needs to be completed.

=9k-32>=0, get k>=32 9

Because k<5 is an integer, it can only be k=4

The equation is x 2-6x+8=0

x-2)(x-4)=0

x=2,4

If all three sides are 2, the circumference is 6

If all three sides are 4, the circumference is 12

If the two sides are 4 and the other side is 2, the circumference is 10

It is not possible to be 2 on both sides and 4 on one side

Combined: the circumference of the liquid preparation is 6 or 12 or 10

According to the information, it can be seen that the triangle is an equilateral triangle, and the solution is x 3or2, and the side length 2 is 6, and the side length 3 is 9