I've ordered some flowers for grandma and they will arrive _____ two hours．（ ）
A．inB．afterC．overD．for
Last September, Thunderstormwas shown ________ Cao Yu, one of China's greatest playwrights.
| A． |
remember |
B． |
remembering |
C． |
remembered |
D． |
to remember |
Cloth shoes became popular during the Ming Dynasty, ________ in Sichuan province.
| A． |
hardly |
B． |
nearly |
C． |
really |
D． |
especially |
Rainbows ________ when sunlight passes through small drops of water in the sky.
| A． |
produce |
B． |
produced |
C． |
are produced |
D． |
were produced |
Alice often ________ the fun of doing DIY with us. She is so creative!
| A． |
shares |
B． |
provides |
C． |
makes |
D． |
gives |
The biggest challenge we all face is to prevent further environmental disasters. We ________ take action before it is too late.
| A． |
can |
B． |
must |
C． |
may |
D． |
might |