We can’t figure out ______ quite a number of insects and birds are dying out．
| A．that | B．as | C．why | D．when |
A person __________ e-mail account isn’t full won’t be able to send or receive any e-mails.
| A．who | B．whom | C．whose | D．whoever |
I refuse to accept the blame for something _________ was someone else’s fault.
| A．who | B．that | C．as | D．what |
Sometimes we buy a magazine with absolutely no purpose ___________ to pass time.
| A．other that | B．rather than | C．as well | D．more than |
This test ___________ a number of multiple choice questions.
| A．is consisted of | B．consists of | C．compose of | D．is made of |
She went out with the door unlocked by _ although she knew early that it would result in theft.
| A．accident | B．intention | C．chance | D．purpose |