Jane has been so ______ in getting used to everything that she hasn’t had time for social activities.

The smile on your father’s face shows that he is satisfied with your result.—_________. I have made my every effort.

I’ve got __________ pen friend who comes from __________ European country.

Once you ______ the habit of smoking, it is hard to quit.

It ___ recently that self-funding foreign students are becoming the largest overseas group in China.