Parents should see to it _______ their children form the habit of brushing their teeth every day.
| A．this | B．that | C．whether | D．if |
I’m sorry, but I didn’t mean to keep you _____ here for a long time. Can you forgive me?
| A．wait | B．waiting | C．to wait | D．waited |
John is the boy _____ legs were badly hurt in the accident.
| A．that | B．who | C．which | D．whose |
Doctors believe only _____ small number of people _____ in the danger of getting the disease.
| A．a; is | B．\; is | C．a; are | D．the; are |
_____phoning this number, you can reach me any time you like.
| A．By | B．With | C．On | D．In |
he shop around the corner caught fire last night. The police are now _____the matter.
| A．seeing through | B．working out | C．looking into | D．watching over |