—What's up? You didn't pick up the phone just now.—I'm sorry that I ________ dancing with music on, but it's done now.
Your behavior won’t be _____ in our house, so you have to be careful!
I’m sure that if you make good use of your ____ time, your English will be improved in a short time.
They are getting things together in______ preparation for ______ journey we have planned.
----Mary had a wonderful time at the party. ---- ________, and _________.
A driver should __ the road when .A concentrate on; drive B. concentrate in; driving C. concentrate to; drove D. concentrate on; driving