If you want to get into that tunnel,you first have to____away all the rocks

If you want to get into that tunnel,you first have to____away all the rocks
A、haul
B、transfer错误
C、repel
D、dispose
____that the demand for power continues to rise at the current rate,it will not be long
before traditional sources become inadequate.
A、Concerning
B、Ascertaining
C、Assuming
D、Regarding
Lincoln,________ life was once hard,were elected President of America.
A、which
B、 whose
C、 who
D、 that
3.She has managed to obtain a temporary work____in Britain.
A、permit
B、permission
C、permissiveness
D、permissible
16.Very few people understood his lecture,the subject of which was very____.
A、dim
B、obscure
C、conspicuous
D、intelligible