A.did
B.failed
C.kept
D.managed
[单选题]That was a difficult question, but Mary still _______ towork it out.A.did B
The question is quite difficult, so ________ students can work it out.A. fewB. l
[单选题]The math problem is ______ to work out.A.too difficultB.difficult muchC.eno
Perhaps this is the only way ___ may help us to work it out.()A. whichB. in whic
The lights are out.A. EvidentlyB. EvidentC. EvidencedD. Evidence
Youyour sweater inside out.A. had wornB. woreC. were wearingD. are wearing
[单选题]The colors in these artificial flowers are guaranteed not to come out.A.dis
When we ____ supper, the light went out.A. hadB. was havingC. having were having
hearing the sad news, the mother cried out.A. IntoB. ForC. ByD. On
() hearing the sad news, the mother cried out.A. IntoB. ForC. ByD. On