—Hurry up, Jason! We’re going to the cinema, but the clothes still need ________.
—Don’t worry. I think thirty minutes ________ enough.
washing; are
to wash; are
to wash; is
washing; is
This is the most beautiful butterfly I have _____ seen in my life..
—What are you reading about? —It’s about the one-child policy. It says that the policy has_____ controlling the population in China.
Maria has _____ trouble _____ math, so she often asks her math teacher for help.
The rivers in Changshun are clearer than _____ in Wuhan..
—Does your father still smoke? —No, he has succeeded in_____ smoking for three years.