oblem may not____, but there’s no harm tobe careful

How did your students express their thanks to youon Teachers’ Day—A gift together with many flowers _______ sent tome

If you want a double room, _____ will cost another ￡15.

Though he started late,Mr Guo played the piano as well as, if , Miss Liu. [ ]

Mum,it is nice weather.I want to skate this afternoon.—Don’t you think the ice on the lake is too thin to________your weight?[ ]