Near the hill there is a small garden,______ owner seated in it playing chess with his friend.
A.whose B.its
B 为什么不选A?
If we go on using energy so wastefully,______ are that our oil wells will be dried up before new energy sources can be found to replace oil.
A.chances B.difficulties C.questions D.problems
A 为什么不选D?
The only question _______ is to find a good solution to this maths problem.
A.that matters B.which matters
C.what matters D.that
A
为什么不选D?matters在这里是什么意思?为什么要加在这里?