Hefei is a beautiful city, isn’t it?—Yes. There are about two ____ visitors here week.

Having a large family to support, Mr.Johnson had to workin the evening.

Excuse me, could you tell me _______?—Sorry, sir. I wasn’t there at that time.

What’s your hobby, Jack?-I like playing ______football, but I don’t like playing _____violin.

The weather isn’t good enough for an outing，is it?—Not at all. We can’t have ________ at this time of the year.