You might those fireworks, Jane. Do be careful with them.
| A．give off | B．cut off | C．set off | D．put off |
Online shopping, when properly, can save a lot of time ,money and energy..
| A．done | B．is done |
| C．having done | D．to do |
computers play an important part in people’s daily life , they still have some disadvantages.
| A．Since | B．As | C．If | D．While |
He had his camera ready ________ he saw something that would make a good picture .
| A．even if | B．if only |
| C．in case | D．so that |
------ Could I use your car tomorrow morning ?
------ Sure .I a report at home.
| A．will be writing | B．will have written |
| C．have written | D．have been writing |
The secretary worked late into night, ________ a long speech for the president.
| A．to prepare | B．preparing |
| C．prepared | D．was preparing |