Yesterday ________ 8-year-old boy fell into the river．________boy was saved by a policeman.
| A．an; A | B．an; The |
| C．a; the | D．a; An |
In our school library there _____a number of books on science, and in these years the number of them ____growing larger and larger.
| A．are; is | B．is; are |
| C．have; are | D．has; is |
Sunglasses are used ________ protecting your eyes in sunny days．
| A．to | B．for | C．by | D．as |
_______ he is in poor health, ______ he is still busy working all day and all night．
A．Although; but
B．Although; /
C．Although; and
These apples in this store look_____ but sell_____．
A．beautiful; well
B．ugly; well
C．well; badly