Since the airport is closed this morning, it must ______ last night. A: snow B: have snowed C: have been snowed D: have being snowed

The Triathlon（铁人三项赛） will be put off if it ___. A: will snow B: snows C: snowed D: is snowed

I don’t know if it or not tomorrow. A: will snow B: snows C: has snowed D: is snowing E: was snowing F: will have snowed

The flight was delayed for several hours because it _____ heavily last night. A: would snow B: has snowed C: snowed D: has been snowing

Since the ground is white, it ____ last night. A: had snowed B: must have snowed C: must be snowing D: must have been snowing

5. It rained on Monday. It snowed on Tuesday. It rained ____ on Tuesday.

It __________________ today. A: snows B: snowed C: is going to snow D: snow

4. Last winter it ________ on that mountain. A: snow B: to snow C: snowed

How is the weather there A: It is snowy. B: B. It snowed yesterday. C: C. It is raining.

It ______ when he got up. A: is snowing B: was snowing C: has snowed