I called you at eight o'clock last night，but nobody answered．
Oh，I________ a shower at that time．（ ）
| A． |
am taking |
B． |
took |
C． |
is taking |
D． |
was taking |
There a book sale in our school library once a year．（ ）
| A． |
is |
B． |
was |
C． |
are |
D． |
were |
Sandy， do you know______？
Yes， Some news about black holes．（ ）
| A． |
what Tom is searching for |
| B． |
what is Tom searching for |
| C． |
who Tom is searching for |
Families usually______new pictures of flowers or fish before Spring Festival．（ ）
| A． |
give up |
B． |
put up |
C． |
set up |
______hard﹣working boy Zhou Bin is!
Yes． I' m sure he'll pass the test．（ ）
| A． |
What a |
B． |
What |
C． |
How |
China plans to send another spaceship into space．
Wow! More and more secrets______soon．（ ）
| A． |
are going to discover |
| B． |
will be discovered |
| C． |
have discovered |