How exciting! The lost children________ by the police last night.
A.are finding B.were finding C.are found D.were found
It was raining. The little boy________ his umbrella and sent it to his mother.
A.put back B.cut off C.broke down D.picked up
—Must I finish the work this week?
—No,You________ .Next Wednesday is OK.
A.needn' t B.can't C.mustn’ t D.shouldn't
Everyone should do something to protect the environment________ it is too late.
A.after B.since C.before D.when
All the people in the theatre will keep quiet when the concert________.
A.began B.will begin C.has begun D.begins
I'm very________because I have so many friends to depend on when I am in trouble.
A.nervous B.lucky C.strict D.serious
