Have you found out the exact reason why the dinosaur _________ many years ago?
| A．died down | B．died out | C．died from | D．died of |
—Now the weight. Only 115. You’d better put on a few pounds.
—Well, actually, I ________ like a horse.
| A．ate | B．was eating | C．have been eating | D．will eat |
I can hardly remember any occasions _______ I get caught in a traffic jam in our town.
| A．which | B．that | C．where | D．when |
—Where have you been all day?
—I _______ some former classmates and I couldn’t get back until it was dark.
| A．have met | B．met | C．would meet | D．had met |
The process of producing electricity may also give out CO2, _______ you heat your house with electricity instead of charcoal.
| A．even if | B．as long as | C．as if | D．as soon as |
—How much of the foreign expert’s speech have you understood?
—Next to nothing. I wish I _______ harder at English.
| A．worked | B．had worked | C．would work | D．were working |