Wait till I turn on my computer, _____ there is his telephone number.
| A．there | B．where | C．which | D．in that |
All the photographs in this book, ________ stated otherwise, date from the 1950s.
| A．unless |
| B．until |
| C．once |
| D．if |
______that he was in great danger, Eric walked deeper into the forest.
| A．Not realized |
| B．Not to realize |
| C．Not realizing |
| D．Not to have realized |
an important decision more on emotion than one reason, you will regret it sooner or later.
| A．Based |
| B．Basing |
| C．Base |
| D．To base |
—Did you fix the computer yourself?
—No, I, because I don’t know much about computers.
| A．has it fixed |
| B．had fixed it |
| C．had it fixed |
| D．fixed it |
— Alvin, are you coming with us?
— I'd love to, but something unexpected ________.
| A．has come up |
| B．was coming up |
| C．had come up |
| D．would come up |