Does the young man standing there ________ the company—No, the company is ________ his father.

Have you worked here since you graduated?—No, I ________ at a factory in Beijing for six years

I still remember the day_______ I was admitted(录取) to the key middle school.

It’s not always necessary to look up the words________ the dictionary while reading. Sometimes we need to guess.

EBOLA is said_______ another big health challenge to our humans over the past several months .