He _____ a carpet on the floor and then _____ on it.
He’s wearing a pair of sunglasses to protect his eyes ________ the strong sunlight.
I planned ________ to see you last week, but I was ill.
.While building a tunnel through the mountain, ________ .
The train ________ arrive at 11∶30, but was an hour late.
.The two ladies are ________ the same age, but there seems to be ten years ________ them.