The streets are wet, it ______ last night.
A: rain
B: must rain
C: has rained
D: must have rained
A: rain
B: must rain
C: has rained
D: must have rained
举一反三
- Since the ground is wet, it ______ last night. A: must rain B: must have rained C: had rained D: rained
- Since the ground is wet, it ______ last night. A: [A]must have rained B: had rained C: must rain
- The ground is wet, it ( ) last night. A: must rain B: must have rained C: is raining D: could have rained
- It() last night. But I am not sure. A: may rain B: might rained C: must rain D: may have rained
- It______last night, because the ground is wet. A: rain B: must rain C: must have rained D: rained