While Helen _____ along the river after supper, she ____ a wallet lying on the roadside.
A. was walking; was finding B. walked; found
B. walked; was finding D. was walking; found
---Excuse me，sir．This is a non-smoking room．
---Oh，sorry．I the sign．
| A．don’t see | B．didn’t see |
| C．won’t see | D．wasn’t see |
Every day, too much water in our school．We should save it．
| A．wastes | B．is wasted | C．was wasted | D．wasted |
---Where is Mr. Wang?
---He together with his students Cunjin Park．
| A．have gone to | B．has been to |
| C．has gone to | D．have been to |
---Mr Zhang，must I hand in my report today?
---No．you ．
| A．mustn’t | B．can’t | C．needn’t | D．may not |
strong the wind is! I'm afraid we can’t go to the sea today．
| A．What | B．How | C．What a | D．How a |