21.Miss Chen can show you around mountain, because she has good knowledge of it.
A. the; a B. a; the C. a; a D. the; ∕
22.Their country has plenty of oil, ours has none.
A. when B. while C. and D. so
23. Granny White lives in a faraway village, but she doesn’t feel at all.
A. alone; lonely B. lonely; lonely C. lonely; alone D. alone; alone
24. If you don’t go to school, I.
A. nor do B. so will C. so do D. neither shall
25. A number of students absent from the meeting and the number of them surprising.
A. were; was B. was; were C. was; was D. were; were
