Deserts, dry areas with _____ no vegetation, cover more than one-third of the Earth's land surface.
A.surprisingly | B.eventually | C.permanently | D.virtually |
American English has so many _________ because the American people have come from all over the world.
A.grammar | B.vocabulary |
C.pronunciations | D.dialects |
A large number of students in our school ____ from the countryside; the number _____ growing these years.
A.is; has been | B.are; has been |
C.is; have been | D.are; have been |
He looked at the envelope and __________ Jenny’s handwriting immediately.
A.understood | B.knew |
C.recognized | D.recovered |
It is said that more than ten thousand workers have ______ the strike(罢工).
A.joined | B.joined in |
C.attended | D.take part |
This exam is very difficult. Many students are concerned ________the results.
A.about | B.with | C.in | D.of |