(  ) 1.They are made ___________ for 14 hours a day.

A. work         B. to work      C. worked      D. working

(  ) 2. The number of teachers in our school _____ 60 and a number of them ______ men teachers.

A. is; are         B. are; is       C. are; are      D. is; is

(  ) 3. —What kind of potato chips do you like?

— I like _______ ones because they are hard, dry and easily broken.

A. crispy¡¡¡¡     B. sweet¡¡¡¡   C. soft¡¡¡¡     D. sour

(  ) 4. Mum added lots of _______ on the food but it still wasn’t _______.

A. salt; enough salt                        B. salt; salty enough

C. salty; enough salt                             D. salty; salt enough