Please help Jack ________ his bike. It's missing (不见了).
The boy started to play the guitar________the age of seven.
—I had a bad cold.—________.
—Will you have a picnic tomorrow?—Yes.But if it________,we’ll visit the museum instead.A.will rainB.rainsC.doesn’t rain
The river will be dirtier and dirtier________we do nothing to protect them.
—________—I have a fever.