_______, the teacher asked whether anyone wished to ask a question.

er to keep healthy, he _____ an hourevery day to take exercise.

Our bodies are strengthened by exercises. ______, our minds are developed by learning.

17________ is expected, according to the on-line survey, is that prices of houses will not go up any longer

We must make sure that public facilities in the newly－built buildings,like the restroom and the lift,are__________to disabled visitors.[ ]