In 1519 ____ traveler who went to American from Europe discovered ____tomato．
| A．the; the | B．the ; a | C．a:．a | D．a; the |
A red light will start continuously flashing when the batteries____ low.
| A．get | B．will get | C．are getting | D．got |
I’m sorry I didn’t phone you, but I’ve been very busy_____ the past couple of weeks.
| A．beyond | B．with | C．among | D．over |
The science of computer,____ rapid progress has been made, is the most important of all.
| A．to which | B．from which | C．in which | D．of which |
Before use, your new mobile must fully____.
| A．get charged | B．become charged |
| C．remain charged | D．turn charged |
—Remember not to pretend to know what you don’t know.
— _____. My last lesson is still fresh.
| A．No, I will | B．No, I won’t | C．Yes, I won’t | D．Yes, I will |