Many people believe that ______ will take years to develop a car that does not pollute the air. [ ]

1—Excuse me. You shouldn’tsmoke here. Look at the sign “NO SMOKING HERE”.–Sorry, I ________ it just now.

Harbin is really a beautiful city and there’re many places of interest.—So it is. I’m going to stay here for _______ two days.

The company designed a new car last month and about 500 cars of this type in the factory next month

Let’s play table tennis after work，shall we—________I can’t wait to do that.