188. John _____ on the desk the compositions he had written, and then _____ for a rest.
| A．laid; lay | B．lay; laid | C．lay; lay | D．laid; laid |
_____ is known to us all, a skill can only be acquired through hard work.
| A．It | B．As | C．What | D．That |
There is no doubt _____ short sight is a serious problem among the youth of our country.
| A．which | B．whether | C．what | D．that |
From the deep valley ______, which had my heart in my mouth.
| A．came a frightening sound | B．a frightening sound came there |
| C．did a frightening sound come | D．a frightening sound did come |
______, I always feel I want a few more days.
| A．However long is a vacation | B．However long a vacation is |
| C．However is a vacation long | D．However a vacation is long |
-- Did you get your car from the garage yesterday?
-- Yes, _______, I wouldn’t have driven to the party on time.
| A．otherwise | B．besides | C．however | D．therefore |