It took me quite a long time to ________the new environment here.
A. adapt to B. relate to 
apply to D. attach to
No one can be sure _____________ in a million years.
| A．what man will look like | B．what will man look like |
| C．man will look like what | D．what look will man like |
It was a matter of ____________ would take the position.
| A．who | B．whoever | C．whom | D．whomever |
___________ 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 |