—It seems that you know Dr. John very well.
—Of course, we ________ together for five years in the 1990s.
A．have worked B．had worked
C．are working D．worked
A recent survey shows the number of people who shop in stores ________， while far more are shopping online.
A.decrease B．decreases
C．is decreasingD．are decreasing
I won't buy this iPhone unless the price ________ to under 2,000 yuan.
A．reduces B．will be reduced
C．has reduced D．is reduced
I ________ for Beijing next Saturday. Do you know when the earliest plane ________ on Saturday?
A．am leaving; takes off
B．Leave; takes off
C．leave; is taking off
D．am leaving; is taking off
Egg prices usually ________ in spring when they are most plentiful.
A.are droppingB．drop
C．have droppedD．will drop
—Did you listen to the report last Friday?
—Yes, it was about the shortage of immigrant workers. That was the first time I ________ about the subject.
A．have heard B．was hearing
C．would hear D．had heard
