____ You know. Mary is a bit slow ___ understanding so... _____ So I have to be patient _____ him.
—What about this pink skirt,madam? —This one is really beautiful. I will buy it_________it's a little expensive.
Only when the work is done ,___________ be able to go back home.
—I prefer. __________ with a pen to________on the computer because I type so slowly. —So do I.
The newspaper says if more underground lines________ next year,it will be much easier for people to travel around Nanjing.
—Excuse me, may I take a seat here? —________. The man on the seat has left.