It will not be he returns from abroad.
| A．before long | B．long before | C．after long | D．long after |
Weare watching TV ______ we caught sight of a friend of ours .
| A．as soon as | B．while | C．when | D．once |
The price of diamond rings has risen sharply _______ the price of gold rings has gone down.
| A．when | B．as | C．while | D．otherwise |
It is a long time since I last saw you . This sentence means _______
| A．I had seen you for a long time | B．I have seen you for a long time |
| C．I haven’t seen you for a long time | D．I saw you again before long |
_______ reason you may give , you ought not to have left homework unfinished.
| A．What | B．No matter | C．However | D．Whatever |
It seemed only several minutes _______ he finished this painting .
| A．after | B．before | C．when | D．until |