. We should advance step by step and not reach ______ what is beyond our grasp.
There are other matters which I don’t propose to ______ at the moment.
One evening, I was with my friend Auguste Dupin at his house in Paris when he had a visit _____ Georges Godinot, head of the Paris Police.
When he ______ the door, he found his keys were nowhere.
—Putting on a happy face not only helps us make friends but also makes us feel better. —______.
We can relax ourselves by taking part in school activities after long hours’ study; _______, we can learn a great deal from other students.