It remains doubtful ______ immediate measures could be taken to prevent underground water pollution.
| A．how | B．whether | C．that | D．where |
_________ at the party, we saw Ruth standing alone.
A, Arrived B, Arriving C, To arrive D, Arrive
The man pulled out a gold watch, __________ were made of small diamonds.
A, the hands of whom B, whom the hands of C, which the hands of D, the hands of which
_______ to reach them on the phone, we sent an email instead.
A, Fail B, Failed C, To fail D, Having failed
We went through a period _______ communications were very difficult in the rural areas.
A, which B, whose C, in which D, with which
The television___________. It’s working again now.
A, is being repaired B, has repaired C, is repairing D, has been repaired