Though she has been in England for half a year, she is still unable to _____ in simple English.[ ]

You are saying that everyone should be equal, and this is ________I disagree.

Mr. Richard was disappointed that many students who had signed up for his adventure course _______ at the last moment.

We must do everything we can ________ our earth cleaner and safer.

They asked me to go swimming. I don’t like it, so I went to the park .