1. There was nothing they could do ___A_____ calmly.

A) but wait

B) only to wait

C) except waiting

D) unless they waited

2. ---“When will the plane arrive?” -B--“I’ll tell you when I ________.”

A) will find out

B) find out

C) am finding out

D) have been finding out

3. John was finishing his assignments when his father ____A____ home from   work.

A) came

B) comes

C) has come

D) is coming

4. He remembered _____B___ to the zoo by his father when he was little.

A) taking

B) being taken

C) to have taken

D) have been taken

5. What is this noise? Tell me what ____C____ here.

A) went on

B) goes on

C) is going on

D) will go on