That was a difficult question, but Mary still _______ towork it out.

[单选题]That was a difficult question, but Mary still ______ to work it out.A.didB.

The question is quite difficult, so ________ students can work it out.A. fewB. l

The lights are out.A. EvidentlyB. EvidentC. EvidencedD. Evidence

[单选题]The math problem is ______ to work out.A.too difficultB.difficult muchC.eno

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

The plan having been made, ___ is to carry it out.A. what we can doB. who we can