问题

38. Mr. Black ______ home because his briefcase is still on the desk.

A:mustn’t have gone
B:can’t have gone
C:shouldn’t have gone
D:needn’t have gone

正确答案是：

同类题型

ars, it was viewed as a serious problem,________ that has never been really solved.

What would you like to say to your ________ before leaving school—I’d like to say “Thank you very much! I’ve learnt a lot from you in the past three years.”

The question came up at the meeting_____ we had enough money for our research

分辨下面加点词的意思，选出判断正确的一项（）①田园将芜胡不归 ②奚惆怅而独悲 ③既窈窕以寻壑 ④既自以心为形役

Itsunny today, but ityesterday .