Only after a baby seal is pushed into the sea by its mother ___ to swim.
| A．how will it learn | B．it will learn how |
| C．will it learn how | D．and it will learn how |
Robert is said _______ abroad, but I don’t know what country he studied in.
| A．to have studied | B．to study |
| C．to be studying | D．to have been studying |
Before you decide to leave your job, _______ the effect it will have on your family.
| A．consider | B．considering |
| C．to consider | D．considered |
I would love _______ to the party last night but I had to work extra hours to finish a report.
| A．to go | B．to have gone |
| C．going | D．having gone |
I felt it a great honour ______ to speak to you.
| A．to ask | B．asking |
| C．to be asked | D．having asked |
When you’re learning to drive, _______ a good teacher makes a big difference.
| A．have | B．having |
| C．and have | D．and having |