12. -- Why didn’t you come to see the film with your parents last weekend? -- I _____ my lessons for the month- exam.
The questionnaire takes ______ ten to fifteen minutes to complete and can be used along with the assessment interview.
As there is less and less coal and oil, scientists are exploring new ways of making use of ______ energy, such as sunlight, wind and water for power and fuel.
In our class, when the bell rang and the teacher closed his book, it was a ______ for everyone to stand up.
Hiking by oneself can be fun and good for health. It may also be good for ______ building.
Some parents are just too protective. They want to ______ their kids from every kind of danger, real or imagined.