Daily Mail of November 25th reported that American astronomers （天文学家）______aplanet that was most similar to the earth.
| A．discovered | B．invented | C．found | D．noticed |
_____ a new library _____ in our school last year?
A. Was, built B. Did, build C. Is, built
Let’s try our best ________ the earth.
A protect B. to protect C. Protects
It is cold outside today. You’d better______ your jacket.
A. put on B. put up C. take off
Although Tina is as _____ as Tim, she runs _______.
A. tall, faster B. taller, fast C. tallest, fastest
I want to go with you ,______ I have to take care of my little sister at home.
A. and B. but C. Or