---What is _________attract you most when you paid a visit to Beijing the other day? --- The beautiful scenery and being warmly welcomed by the people.
Do you have any difficulty ___ these flowers? I’d like to help you if you need.
I was really anxious about you. You ______ home without word.
Allen had to call a taxi because the box was_______ to carry all the way home.
All these gifts must be mailed immediately_________ in time for Christmas.
The chairman thought______ necessary to invite Professor Smith to speak at the meeting.