I am not sure ............ food tablets might supply enough energy for astronauts or not.

A. She said that if the weather was fine, she would go on a picnic with her friends.

B. I said that if the weather was fine, she would go on a picnic with her friends.

C. She asked that if the weather was fine, she would go on a picnic with her friends.

D. She said if the weather was fine, I would go on a picnic with my friends.

A. The father encouraged Mike to apply for the job.

B. The father denied applying for the job.

C. The father invited Mike to apply for the job.

D. The father forced Mike to apply for the job.

A. if would he be

B. whether would he be

C. whether he would be

D. he would be

A. who speak English

B. who spoke English

C. who did speak English

D. to speak English

A. My friend told me that he had just received a postcard from my aunt.

B. My friend told me that he had just received a postcard from his aunt.

C. My friend said me that he had just received a postcard from his aunt.

D. My friend told me that I had just received a postcard from my aunt.

A. He said that I would clean the car tommorrow.

B. He said that he would clean the car the previous day.

C. He said that he would clean the car tomorrow.

D. He said that he would clean the car the next day.

A. He threatened to kill me if I didn't give him my wallet.

B. He promised to kill me if I didn't give him my wallet.

C. He ordered to kill me if I wouldn't give him my wallet.

D. If I don't give him my wallet, I will kill me.