Can you imagine the Great Wall in such a short time?
A. to climb B. climb C. climbed D. climbing
I’m too tired and I need a good rest.
A. taking B. to take C. to taking D. taken
— life on Mars? —I hate it.
A. What do you think B. How do you like
C. What do you find D. How do you think
If you want to be my friend, you must never do anything I .
A. like B. do C. want D. hate
According to the traffic rule, when riding a motorbike, you must wear a to protect your head.
A. helmet B. shirt C. cap D. mask
—When was first robot ? —In 1959.
A. a; invent B. the; invent C. a; invented D. the; invented
