In time of serious accidents, ________ we know some basic things about first aid, we can save lives.
A．whether B．until C. if D．unless
The parents suggested ________ in the hotel room but their kids were anxious to camp out during the trip.
A．sleep B．to sleep C．sleeping D．having slept
________ by the beautiful scenery of the West Lake, the foreigners decided to spend another two days in Hangzhou.
A．Attracting B．Attracted C．To be attracted D．Having attracted
Our food supply ________. We'd better get some in case there's none left.
A. is running out B. has run out of
C. is using up D. has used up
________， the football game has been decided not to be put off.
A．Heavily as did it rain B．As it rained heavily
C．Heavily as it rained D．As heavily it rained possible
This small seaside village is such a perfect place for holidays that visitors never leave it________．
A．feeling disappointing B．felt disappointing
C．feeling disappointed D．felt disappointed
