Do you know ______________ had reported the accident to the police?
A．who it was that B．who was it that C．it was who that D．that it was who
Passengers on board aren’t allowed _____ calls during take-off.
A．making or receiving B．having made or received
C．to have made or received D．to make or receive
During the 1960s, songs about winter ___________ by many famous rock groups were popular among people of different ages.
A．released B．being released
C．releasing D．having been released
__________ in the fields on a March afternoon, he could feel the warmth of spring.
A．To walk B．Walking C．Walked D．Having walked
The Spring Festival is our traditional festival, __________ people usually visit their friends and relatives.
A．for which B．to which C．during which D．about which
Considering that she did her work ______ her manager had instructed, it was not proper to criticize her.
A．as B．until C．when D．though
