Why are you so excited—Lucy invited me ______ to her birthday party.

May I smoke here?—— If you____, that’s the smoking section over there.

The story he told us was very________and we were________

Apple’s iphone4S disappointed its fans，its later success was beyond what people could expect

Oil prices have risen by 32 percent since the start of the year, a record us$ 57.65 a barrel on