—Have you worked here since you graduated?
—No, I ____________at a factory in Beijing for six years.
A.would work | B.have worked | C.had worked | D.worked |
-He seems to be a good teacher .
- _____ . He has been a teacher for 20 years.
A.So does he | B.So he does | C.So is he | D.So he is |
The earthquake damaged many houses and bridges; ______, it caused over 2,300 deaths.
A.otherwise | B.besides | C. therefore | D.however |
While other scientists are keeping____eye on changes in the H5N1 bird flu strain, the scientists in England are working on vaccines, in case it becomes highly infectious in ____humans.
A.a , / | B.an, / | C.the, an | D.an, the |
---John, there is ______ Mr. Wilson on the phone for you.
---I'm in ______ bath.
A.a; the | B.the; a | C.a;不填 | D.the;不填 |
The teacher, with 6 girls and 8 boys of her class, _______ visiting a museum when the earthquake struck.
A.was | B.were | C.had been | D.would be |