Choose the best answer.

1. We need a minimum of seven people to start the club.
a. a lot of
b. at once
c. at least
d. at any time


2. When she heard her friend was in the hospital, she left without delay.
a. at first
b. a long time ago
c. at a time
d. at once


3. The students were feeling worried about the big test.
a. covered with
b. anxious about
c. afraid of
d. excited about


4. The white spot around his eye made the puppy distinguished from the others.
a. familiar with
b. absent from
c. different from
d. crowded with


5. She was happy because the bus had arrived after much time had passed.
a. at least
b. all the way
c. at last
d. after all