let's______(完整形式)A.let us B.let does
_____ it rainy? A. IsB. isC. Are
It's time _____ go home. A. forB. toC. /
How much _____ this pencil-case? A. areB. isC. am
_____ the weather like today? A. What'sB. Where'sC. How's
--- Is this _____ dress?--- Yes, it is. A. youB. yourC. I