Listen! Dave _____________on the phone.
—_____ do you like science?—Because it’s interesting.
—You must _____ a letter to your mother tomorrow.—Well, I will, Dad.
—_____ does Kangkang meet his friends?—Four times a month.
Mr. Wang _____ gets up early. So he is ______ late for work.
—Shall we go to the amusement park right away or next weekend?— ______Any time will do.