–How clean your car is! --Thank you. It _____ very often.
The new treatments ____by Norman Bethune helped a number of soldiers .
----Can you finish ___ these books before 10 o’clock? ----Yes, I can .
---Remember ____to my daughter’s dance show next Friday. ----Of course I will.I’ll never forget ____ her dance for the first time last year.
I’m sleepy.I prefer _____at home to going out for a walk.
When I was walking past his room yesterday evening.I heard him ____the piano .