6.Heating ________ into the students‘ dormitories now.
A. is putting
B. is being put
C. is been put
D. has been putting
7.This page needed ________ again.
A. being checked
B. checked
C. to check
D. to be checked
8.In some parts of the world， tea ________ with milk and sugar.
A. is serving
B. is served
C. serves
D. served
9.If I had remembered ________ the window， the thief would not have got in.
A. to close
B. closing
C. to have closed
D. having closed
10.The ancient Egyptians are supposed _______ rockets to the moon.
A. to send
B. to be sending
C. to have sent
D. to have been sending
