—Is the project difficult for the students?
—No. Most of the relevant information ______ to them.
| A．has been provided | B．has provided |
| C．had been provided | D．had provided |
Working as a manager, Rebecca found it hard ______ between work and her family.
| A．balancing | B．to balance |
| C．to have balanced | D．having balanced |
That restaurant is extremely popular, ______ you may have to wait to get a seat.
| A．for | B．so | C．or | D．yet |
Premier Li Keqiang delivered a speech at the conference, _________ university graduates to start their own business.
| A．encouraging |
| B．to encourage |
| C．having encouraged |
| D．encouraged |
—What do you think of the Huawei P7?
—Terrific, I would buy one if I ______ an iPhone 6 Plus last year.
| A．didn’t buy |
| B．don’t buy |
| C．hadn’t bought |
| D．haven’t bought |