问题

I think the biggest problem in banning smoking is ______ people can buy cigarettes easily.

A:that
B:whether
C:where
D:how

正确答案是：

同类题型

The large number of donations from China to the earthquake suffers ______ the Chinese people’sunselfishness and internationalism.[ ]

He gave us advice that this work ________

The problem requires ______

You should not eat ________ meat. It’s ________ bad for your health.

Studies show that people are more _____ to suffer from back problems if they always sit before computer screens for long hours.