【题目】The math problem is ______ difficult that very _____ students in our class can work it out
A.so ; a few
B.so ; few
C.such ; few

A. early B. earlier C. earliest D. the earliest

—Sure.

A. hand B. help C. ball D. save

A. sound B. music C. voice D. noise

a.m. to 10 p.m.

A. opened, open B. open, open

C. open, opened D. opens, open

【题目】Don’t drink all your water ____
A.in time
B.on time
C.in one go

A.join B. be in C. come in D.take in

a bus.

A. always B. seldom C. usually D. often

A. not eat B. eat other C. not to eat D. don’t eat

【题目】You should be careful of the stones ____ from above
A.falling
B.fallen
C.fell