Guangzhou is ________ the south of China and is a very busy city.
A. in B. on C. at
Every year lots of trees _______ to make our country more beautiful.
| A．is planted | B．was planted | C．are planted | D．were planted |
--Listen! Is it Linda singing in the next room?
--No, it __________ be her. She is still in Shanghai.
| A．can’t | B．couldn’t | C．may not | D．might not |
-- __________ beautiful city!
--Yes. Lots of tourists come to visit it every year.
| A．How | B．What | C．How a | D．What a |
--I lost my MP4 on my way home this afternoon.
-- _________! You must be careful next time.
| A．Take care | B．Look out |
| C．Pay attention to | D．What a pity |
--I hear Jack Chan will come to Laiwu next week.
--Really? _______ he comes, my younger sister will be very happy,
| A．If | B．Until | C．Unless | D．Before |