The mountain was ______ steep ______ few people in our city reached the top.

Jenny will visit me if he ____________ here.

     the movie star goes, there are lots of fans waiting to see her.     

The pupils will go to plant trees if it     tomorrow.
A. won’t rain          B. doesn’t rain           C. isn’t rain

____ you don’t work hard, you can’t learn English well.
A. So                   B. But                  C. If

Peter was so excited _____he received an invitation from his friend to visit Wuxi.

Ｉdidn’t go to bed _______ I finish my homework.

My sister isn’t in. ________ she comes back, I’ll let her call you back.

We will climb the mountain tomorrow_it doesn't rain.
A. if B. although    C. since

– I don’t know if Mr. Li ____ to the party this evening.
-- I think he will come if he ____ free.