1.The little girl _____ when her mother entered the bedroom.

A. cry              B. cries            C. was crying       D.is crying

2.Nowadays China         for its new “four great inventions”

—shared bicycles, electronic payment, high-speed railways and online shopping.

A. was knowing      B. was known        C. is knowing       D. is known

3.---Hey, Tom. Let’s go swimming.

---Just a moment, I ___an email.

A. send             B. sent             C. am sending       D. was sending