问题

He ______ be sitting at the gate, waiting for his lost son.

A:used to
B:was used to
C:could
D:was accustomed

正确答案是：

同类题型

I never doubt ________ his advice is of great _________ to me.

Up to Tuesday’s attack, the worst school shooting in the USwas in March 1998 in Jonesboro,________ two boys, aged 11 and 13, shot and killed a teacher and four girls

I usually have ________ hamburger while waiting for________7: 00 school bus.

Your article is too long—please cut it down to 1,000 words.

It’s cloudy. You had better ________ an umbrella.