—We’ll visit the Summer Palace________there is a heavy rain tomorrow．
—OK！Boating on the lake must be great fun．
| A．unless |
| B．since |
| C．as soon as |
| D．if |
Don’t go to school breakfast.It’s a bad habit.
| A．after | B．with | C．without | D．when |
If you study hard, you _______ good grades.
A. get B. got C. will get
Bob didn’t go to bed _______ he finished doing his homework.
A. because B. until C. however
Every year, _______ people come to visit our school.
A. hundreds
B. hundreds of
C. hundred
They plan to have a party _______ Saturday afternoon.
A. on B. in C. at