There are three basic ways of _____ language to writing, and all known graphic systems use one or a combination of these.
| A．committing | B．attaching | C．comparing | D．relating |
It was not until she had arrived home _______ her appointment with the doctor.
| A．when she remembered | B．and she remembered |
| C．did she remember | D．that she remembered |
Smoking, ______ is a bad habit, is popular with the young.
| A．that | B．which | C．what | D．as |
The number of the people who own cars ______since 1990.
| A．is increased | B．are increased |
| C．have been increasing | D．has been increasing |
— Is he coming?
— ______. He may not have time.
| A．It depends it | B．That depends | C．It’s up to you | D．No way |
It took him a long time to ______ the skills he needed to become an artist.
| A．acquire | B．arrive | C．return | D．cover |