Don’t believe him .He is just _____ an excuse .
The terrible weather ________ our difficulty in building the road.
—Yesterday we learnt the fifth, ________?—I'm sorry, Mr. Li. I don't understand everything.
Wouldn't it be ________ wonderful world if all nations live in________ peace with one another?
—How was your recent trip to Sichuan?—I've never had ________ one before.
Isn't ________ rude ________ him to talk to his mother like that?