Green products are becoming more and more popular because they are environmentally _________.
| A．friendly | B．various | C．common | D．changeable |
—______ do you have a swimming class?
—Once a week.
| A． |
How much |
B． |
How soon |
C． |
How often |
—World Sleep Day falls on March 21st. Do you think sleep is important?
—I think so. Sleeping well can give you enough ________.
| A． |
courage |
B． |
energy |
C． |
reason |
—Do you know Zhang Guimei, one of the “People Who Moved China”（感动中国人物）?
—Yes. ________ she met lots of difficulties, she successfully helped so many students to go to college.
| A． |
Although |
B． |
Since |
C． |
If |
—I ________ Mike on Monday. He invited us to visit his hometown in his letter.
—Do we accept his invitation? We haven’t met him for 3 years.
| A． |
heard from |
B． |
came from |
C． |
suffered from |
—There has been less and less pollution in Leshan these years.
—The government has made a great effort on it. I’m sure this problem ______ one day in the future.
| A． |
was solved |
B． |
solves |
C． |
will be solved |