What __ public is concerned about is whether the scientists win be able to find _____ cram for the disease.
| A．the; a | B．the; / | C．/; a | D．/; the |
“What do you want to be?” asked Mrs. Crawford. “Oh, I ________ president,” said the boy, with a smile.
| A．have been | B．am | C．was | D．will be |
Around two o’clock every night, Sue will start talking in her dream. It somewhat ________ us.
| A．bothers | B．had bothered | C．would bother | D．bothered |
If nothing ________, the oceans will turn into fish deserts.
| A．does | B．had been done | C．will do | D．is done |
— Have you heard about the recent election?
— Sure, it ________ the only thing on the news for the last three days.
| A．would be | B．is | C．has been | D．will be |
— I don’t understand why you didn’t go to the lecture yesterday afternoon.
—I'm so sorry, But I ________ my homework.
| A．had done | B．was doing | C．would do | D．am doing |