1.---You’ve dropped ______ “s” in the word “necessary”.
---Oh, _______letter “s” is doubled.
A. a, a B. a, the C. an, the D. the, the
2. All the cups are made of glass _____the green one. It’s made of metal.
A. beside B. except C. except for D. besides
3. Look! The boy isn’t working so ______as that girl.
A. hard B. harder C. hardly D. hardest
4. I need a pen _______, could you lend one to me?
A. write B. to write C. writing D. to write with
