I ____his number in the phone number to make sure that I didn’t mistakenly remember it.
A. looked up
B. looked for
C. picked out
D. picked up
The teacher told the students to____ their books while she was giving them dictation.
A. put by
B. put on
C. put up
D. put away
I can hardly hear my friend. Would you please turn your radio ____?
A. on
B. down
C. up
D. off
This unit takes ____where the last unit left off.
A. on
B. down
C. up
D. off