问题

I’d like to start my own business next year – that’s __________ I will face my big challenge in life.

A:why
B:when
C:which
D:what

正确答案是：

同类题型

c. of; about D. on;at

Only by increasing the number of doctors by 50 percent _______ properly in this hospital.

know the man by ____ but I have never spoken to him.

The children all felt____at the____sound from behind the hill.[ ]

Shall we go and help them with their work—-We’d better not. They said we’d just be ______ if we tried to help.