当你想知道这些物品是谁的时,问: A. Whose are these?B.Whose are those?C.Who are they?
Birds are singing________the sky. A.in B.on C.at
The weather is________. A.snow B.snowy C.snows
—Is Lisa reading books? —Yes,________. A.she isB.she'sC.She is
________he often clean the room on Sundays? A.Do B.Does C.Did
Spring is coming.It's time________. A.to plant seeds B.plant seeds C.planting seeds