If you _______that kind of fish, you ________very sick.

I don’t know ______ he will come tomorrow. ______ he comes , I’ll tell you.

I didn’t know when he     back. He said he would call me when he     home.

He _______ you an e-mail as soon as he ________ a plan.

If our government _______ attention to controlling food safety now, our health _______ in danger.

---Helen is a thoughtful girl.  --- Yes. I think she is _____ plan everything well.

 I am waiting for my friend.        , I will go swimming alone.

 —Do you know if he________ to play football with us?  —I think he will come if he _________ free tomorrow. 

The box is ________ heavy ________ I can’t lift it.

Study harder, and you _______ better grades.

I ____ go to bed____ my mother came back home.

---When can we use this lift? ---Not until it____________ next week.

It _____ ten years since they _____ to France.

--Kate wants to know if you      a picnic next Sunday.--Yes. But if it       , we’ll visit the museum instead.

I’ll go there with you __________.

I study really hard ________ I can make my dream come true. 

Sally took a photo of her friends while they ______ computer games.

We’ll go shopping if it ________ rain tomorrow.

If you         hard, you        a good grade in the exam.

.------Why are you so upset? ------______I said,they didn’t believe me.