Choose the best answer.

1. He asked her ________ she couldn't meet him on Friday.
a. in brief
b. owing to
c. how come


2. Please ________ when you have time. I'd like to hear from you.
a. drop me a line
b. keep me off
c. let go of me


3. The conclusion, ________, is that more research needs to be done in this area.
a how come
b. in brief
c. on behalf of


4. He is filling out the form ________ his sister because she can't read English very well.
a. owing to
b. how come
c. on behalf of


5. I think I should ________. I feel a little dizzy.
a. lie down
b. keep off
c. yield to


6. My father ________ my mother's request for a new car.
a. let go of
b. yielded to
c. dropped a line


7. Once you ________ her friend as a suspect, the only remaining suspect is her brother!
a. yield to
b. drop a line
c. rule out


8. The traffic is heavy at this time ________ the baseball game that just finished.
a. on behalf of
b. in brief
c. owing to


9. My dog was chewing my shoe and would not ________.
a. rule it out
b. let go of it
c. lie down


10. You can look around the house, but ________ the stairs because they are being repaired.
a. keep off
b. lie down
c. rule out