Babies sleep l6 to l8 hours in every 24 hours, and they sleep less ________ they grow older.
A.while | B.as | C.when | D.after |
What you said just now______ me of that American professor.
A.mentioned | B.informed | C.reminded | D.memorized |
The invention of the typewriter was a great_______ to communication and printing.
A.contribution | B.devotion | C.revolution | D. construction |
.He is a new comer in the team, but I have the______ that I have seen that man before.
A.decision | B. situation | C.impression | D.position |
We would like to drop in at your house if ___________
A.you are convenient |
B.it is convenient of you |
C.it is convenient to you |
D.you will be convenient |
The water in this glass is too hot. I prefer some cold______ water.
A.to boil | B. having boiled | C. boiling | D. boiled |