________that we can’t get the necessary equipment，we will have to give up the experiment.
| A．To assume | B．Assumed | C．Assumes | D．Assuming |
4. I hate _______ when young people speak to the elderly in a rude way.
| A．this | B．that | C．it | D．One |
5.Is ____ necessary to complete the design before National Day?
| A．this | B．that | C．it | D．he |
6.I don’t think ____ possible to master a foreign language without much memory work.
| A．this | B．that | C．its | D．it |
7.Does ______ matter if he can’t finish the job on time?
| A．this | B．that | C．he | D．it |
8.I was disappointed with the film . I had expected ______ to be much better.
| A．that | B．this | C．one | D．it |