1. We'll start when he ________ ready.
A) will
B) will is
C) will be
D) is

2. We ________ at a party two months ago.
A) meet
B) met
C) have met
D) meeting

3. So far, there ________ no word from them.
A) is
B) was
C) has
D) has been

4. When I called on her, Mary ________ her room.
A) clean
B) cleans
C) cleaning
D) was cleaning