Now most families have only one child _____ our country’s one-child policy. A. since B. because C. because of
—Is Kangkang good at English?—Sure. He _______ a lot of time on it every day.
Maria didn’t hear me. She _______ with Betty.
—You look very sad. What’s wrong?—Don’t worry. There is _______.
In the early 1800s, many workers called Monday “_______ Monday”.
Han Wenda is very funny and he often makes his classmates _______.