Peter ________ to help our math teacher carry books yesterday.
| A．tells | B．is told | C．told | D．was told |
Let him _________. Don’t make him __________.
| A．go; to cry | B．going; crying |
| C．to go; cry | D．go; cry |
_________ the animals _________ our duty.
| A．To protect; are | B．Protecting; are |
| C．To protect; is | D．To protecting; is |
We are making a plan _________ water clean.
| A．make | B．to make | C．making | D．makes |
Let’s _________ what we can do to save the animals in danger.
| A．look after | B．look for |
| C．find out | D．look at |
--- How can you _________ there? --- ___________air.
| A．get to; by | B．reach; by |
| C．get; in | D．arrive; on |