— Write to me when you get home. — __________.
| A．I must | B．I should | C．I will | D．I can |
___________ caused the accident is still a complete mystery.
| A．What | B．That | C．How | D．Where |
It is generally considered unwise to give a child _____________ he or she wants.
| A．however | B．whatever | C．whichever | D．whenever |
. _____________ we’ll go camping tomorrow depends on the weather.
| A．If | B．Whether | C．That | D．Where |
____________ we can’t get seems better than ____________ we have.
| A．What; what | B．What; that | C．That; that | D．That; what |
Sarah hopes to become a friend of _____________ shares her interests.
| A．anyone | B．whomever | C．whoever | D．no matter who |