If you_____this experiment you will understand the theory better.
| A．will be doing | B．have done | C．will have done | D．would do |
I don’t like to be interrupted if I_____.
| A．speak | B．will speak | C．am speaking | D．spoke |
I wonder if he_____us, and I think if he_____us we’ll be able to complete the task ahead of time.
| A．helps, helps | B．will help, helps |
| C．helps, will help | D．will help, will help |
You won’t succeed_____harder.
| A．unless you will work | B．unless you work |
| C．unless you don’t work | D．if you won’t work |
_____ weather permits, we’ll have an outing.
| A．For | B．Though | C．While | D．If |