6.Which of the following does paper burn in?( )
| A. | CO2 | B. | N2 | C. | He | D. | O2 |
3.--What______horrible day it was yesterday!
--Yes.But I love______ air after it rains because it smells fresh.( )
--Yes.But I love______ air after it rains because it smells fresh.( )
| A. | a,the | B. | a,/ | C. | the,the | D. | the,a |
2.Guo Degang is a famous crosstalk performer.He always makes people __________.( )
| A. | laughs | B. | laugh | C. | laughing | D. | to laugh |
1._____ people must pay for plastic bags,they are still not used to using reusable bags.( )
| A. | If | B. | When | C. | Because | D. | Although |
20.-William fell down from his motorcycle and hurt his leg this morning.
-___________.( )
-___________.( )
| A. | That's all right. | B. | I'm sorry to hear that. | ||
| C. | Never mind. | D. | Really?He's too careless. |
19.Jenny won't tell the secret to anyone____ she knows many people are eager to find it out.( )
| A. | though | B. | since | C. | because | D. | but |
17.______ Thanksgiving Day is a western festival,it's a chance for me to thank my parents.( )
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| A. | If | B. | Although | C. | When | D. | Because |