I _____ the book for two weeks. I must return it to the school library.
---- Please don’t smoke here. Look at the sign. ---- ________.
-_______is the old bridge over the river? - Not very wide. It's about three meters.
We didn’t find________ in the picture.
- _______ exercising, and you'll be healthier.
----When did you _________ Suzhou last night? ----At about 9 p.m.