Visitors ________not to touch the exhibits.
| A． will request | B．are requested | C．are requesting | D．request |
To help Tom improve his English, I_______ that he take some online courses.
| A．recommend | B．acknowledge | C．abandon | D．declare |
After retirement, she _____ herself in _______the poor children.
| A．occupied, helping | B．occupied, to help |
| C．devoted, to help | D．devoted, helping |
Preparations have been ______for the project and it can be started at any moment.
| A．contradicted | B．approved | C．made | D．purchased |
The professor, ________ his assistants, _______ conducting the experiment.
| A．in addition, is | B．as well, is |
| C．in addition to, are | D．as well as, is |
--- Did you have a good time at the party?
--- Thanks. I appreciated _________ to your home.
| A．to be invited | B．being invited |
| C．to have invited | D．having invited |