It is ______ useful DV.I've watched it for ______ hour. A、the,anB、a,anC、an,aD、an,the
It is ______ useful DV.I've watched it for ______ hour.
A、the,an
B、a,an
C、an,a
D、an,the
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9．—Where-s Mr Wu ,do you know?—Well ,lt's hard to say． But I saw him ________a football game just now．A． was watchingB． watchingC． had watchedD． watched
While I _____ television, the door bell _____.A. watched/would ringB. would watch/had rungC. was watching/rangD. had been watched/was ringing
The research should prove invaluable in the study of linguistics.A:useless B:practicalC:little D:useful
The research should prove invaluable the study of linguistics.A:uselessB:practicalC:littleD:useful
What is the author’s attitude towards“seeing is believing”？( ) A.Positive B.Dangerous C.Negative D.Useful
3、选择括号中恰当的动词填空。 All of the information _____（is/are) useful.