—Can you help kids ____________ swimming? —Yes, I can.
—Mum,it’s late.Why are you still here?—Dad hasn’t come back yet.I________for him.A.am waitingB.was waitingC.waited
They have fun________their homework all the time.
Thanks for helping me________out that problem.
The news on TV reported that it would rain________.
—She didn’t play computer games.—________.