问题

I set up email addresses for connecting with my parents last May. But I didn’t write to them as often as I ______.

A:should
B:must have
C:should have
D:must

正确答案是：

同类题型

We don’t doubt _____ he will succeed in the research work[ ]

We _______ very early so we packed the night before

island atourist attraction, last week’s earthquake would have caused far more deaths

―Did you meet Professor Johnson? ―Yes, but when I arrived, he ________, so we only had time for a few words

____________ no doubt that 100 years ago animal testing was cruel but today animals in experiments are very well taken care of