(2014·北京四中3月模考)It is well known that knowledge is________treasure house，but practice is________key to it.
#99126
A
a；the
B
the；the
C
a；/
D
/；the
推荐题目
This book is said to be a special one，which________many events that cannot be found in other history books.
#99198
A
writes
B
covers
C
prints
D
reads
(2013·山东，27)—Oh no! We're too late.The train________.— That's OK.We'll catch the next train to London.
#99732
A
was leaving
B
had left
C
has left
D
has been leaving
The discussion ________ alive when an interesting topic was brought in.
#104745
A
was coming
B
had come
C
has come
D
came
—If it hadn’t been raining so hard, I might have been home much earlier.—It’s too bad you _____ it. Nancy _____ here and she _____ to see you.
#101950
A
didn’t make; is; was
B
won’t make; will be; wants
C
didn’t make; was; wanted
D
wont’ make; would be; wanted
Half the world’s population ______ water shortages within 15 years according to the World Bank, just one of many recent alarming reports on the world’s fresh water supply.
#100706
A
are suffering
B
have been suffered
C
will suffer
D
were suffered