Camels have three eyelids to ________ themselves from the blowing sand.
| A．protect | B．stop | C．keep | D．hide |
--- How did you react _____ your father's suggestion ?
--- I reacted strongly _____ it .
| A．on; to | B．on ; with | C．against ; with | D．to ; against |
This problem is said _____ three times.
| A．having discussed | B．to have been discussed |
| C．having been discussed | D．to have discussed |
Smith’s jacket looked just the same as Jack’s, but it cost __________ his.
| A．as much twice as | B．much as twice as | C．as twice much as | D．twice as much as |
. --- I'm sorry. I ____________ the bike to you yesterday. But I was too busy at that time.
--- Never mind.
| A．should return | B．should have returned | C．must return | D．may have returned |
I really don't like art , I find his work impressive.
| A．As | B．Since | C．If | D．While |