Practising Chinese kungfu (功夫)can not only ____ one’s strength, but also develop one’s character.
Some students were late for class because they had been _________ by the heavy storm.
________ you don’t lose heart, I’m sure you can pass the coming examination.
—How much of the foreign expert’s speech have you understood? —Almost nothing. I wish I ________ harder at English.
At the crossroads, you have to drive very ________ to avoid traffic accidents.
David has to admit the fact ________ he has fallen behind the others in his class.