Sorry, I ________ a mistake. Let me correct it.
| A． |
will make |
B． |
am making |
C． |
was making |
D． |
have made |
At this time yesterday, I ________ a science exam here.
| A． |
take |
B． |
was taking |
C． |
am taking |
D． |
will take |
John is waiting for me. We ________ to the bookstore together.
| A． |
went |
B． |
have gone |
C． |
will go |
D． |
were going |
—Do I have to hand in my report now?
—Of course, you ________. We’re going to discuss it.
| A． |
can |
B． |
can’t |
C． |
must |
D． |
mustn’t |
________ you can use your dictionary, you will learn English better.
| A． |
If |
B． |
Unless |
C． |
Though |
D． |
Before |
