When products made in factories ，they are thrown away as garbage．
| A．come to an end | B．are put to use | C．are used up | D．wear out |
The problem is _______ we can arrive there before 6:00 tomorrow morning.
| A．which | B．whether | C．when | D．that |
The man fled aboard, trying to avoid ________.
| A．catching | B．being caught | C．to catch | D．to be caught |
--- Betty , welcome to my birthday party . Please make yourself at home .
--- ________.
| A．The same to you | B．No , not really | C．Thank you | D．Here you are |
After winning war in Iraq，the country fell into new worries of economy．
| A．the; the | B．a; the | C．the; ／ | D．a; ／ |
The concert _______ many foreign students were invited was a feast for the eyes.
| A．for which | B．to which | C．in which | D．on which |