Mary and Gina are my cousins. _____father works in Dongfeng Company.

The fact has worried many scientists _____ the earth is becoming warmer and warmer these years. [ ]

下列各句中没有语病的一项是

I can think of many cases, ________students obviously knew a lot of English words and expressions but couldn’t write a good essay.

The flowers were so lovely that they __________ in no time.