问题

Don’t talk . It’s time __________.

A:have class
B:having class
C:had class
D:to have class;

正确答案是：

同类题型

927-31 is ________in English.

下列各句括号中补出的省略成分,不正确的一项是

The research project has only been under way for three months, so it’s too early to________its success. [ ]

If I had a lot of money in the future,I would buy a big house, with a garden ________as far as the river. [ ]

Measures have been taken ________ the spread of the HIV.[ ]