When I left my office，I saw the headmaster________to some students at the school gate．
A．talk B．talking
C．talks D．to talk
They thought about________some photos in Beijing．
A．take B．to take
C．taking D．took
The man followed the boy________what he wanted________in the small room．
A．to see；to do B．to see；do
C．see；to do D．see；do
—I was at the cinema at 8 o’clock last night．What about you?
—I________the Internet at home．
A．am surfing B．surfed
C．will surf D．was surfing
________I didn’t find my wallet．But in the end I found it in the drawer．
A．After all B．At once
C．In time D．At first
When I got there, they the old people clean the house.
A.helped B.are helping
C.were helping D.help
