I hope there will be ____ cars and ____ pollution in the future, thus people will live longer.
-_______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.
Are they ______ grandparents ?