________, I could not memorize the text.
| A．However hard did I try | B．However hard I tried |
| C．However I tried hard | D．However I had tried hard |
Their performance was much better than__________.
| A．expecting | B．it expected | C．expected | D．is expected |
Please keep the windows closed _____________ it rains.
| A．in case of | B．in that case | C．in no case | D．in case |
When I entered the room, the boy wasin the TV series Journey to the West.
| A．drawn | B．attracted | C．absorbed | D．taken in |
---Volunteering is becoming popular in China .
--- Yeah, people are now aware that helping others is helping themselves.
| A．naturally | B．successfully | C．thoroughly | D．increasingly |
The computer systemsuddenly while he was searching for information on the Internet.
| A．broke down | B．broke out | C．broke up | D．broke in |