____Tom ______ his friend know about types of personality.
| A．Either ,or | B．Not only, but also |
| C．Both, and | D．Neither, nor |
—Mrs White always helps others _____ she is very busy. —She is so kind.
A. but B. because C. although
—The population of the world ____ still ____ now.
—So it is.
A. are; growing B. will; grow C. is; growing
—It smells terrible. What has happened here?
—Look, there is a chemical factory_____ much waste gas.
A. pour B. pouring C. poured
In our class _____ of the students _____ girls.
A. two fifths; are B. second fifth; are C. two fifths; is
—Where are Maria and Kangkang?
—They _____ England.
A. had been in B. have gone to C. have been to