—Shall we go ______ tomorrow, dad? --Good idea. A. swam B. swimming C. swim
I won’t take part in the party _____ Joe invites me..
—Will you go to Jane’s birthday party this evening, Rick?—If Michael won’t, _____.
—Our country _____ progress in science and culture in recent years.
—What did our geography teacher say?—She told us that the earth _____ around the sun.
When we went into the park, we saw someone _____ Chinese Kungfu.