Special entrances _____ buildings should be constructed ______ the convenience of the old and disabled.

A. of; for　 B. to; for　 C. into; for　 D. to; with

These tablets are harmful to the children，so they _________ out of their reach．

1. A.
   should keep
2. B.
   should be kept
3. C.
   would keep
4. D.
   will keep

Students should be encouraged to use _____ Internet as _____ resource

1. A.
   不填, a
2. B.
   不填, the
3. C.
   the, the
4. D.
   the, a

Time should be made good use of ____ our lessons well

1. A.
   learning
2. B.
   learned
3. C.
   to learn
4. D.
   having learned