问题

We don’t allow in the cinema. But youare allowed in the rest room.　

A: smoking,smoking
B: smoke,smoking
C:smoking, tosmoke
D: to smoke, tosmoke

正确答案是：

同类题型

Some scientists have questioned the theory ______ CO2 is causing dangerous global warming.

_____ ashes from the volcano in Icelandhave caused problems for air traffic and business, scientists don’t think itwill have long-term effects on human health.

It was not until the scientist died________we appreciatedthe true significance of his discoveries.[ ]

Excuse me, would you lower your voice or use your mobile phone outside? —Oh, sorry.I_______

Three letters to her, but there is still no reply.