You have to wear a helmet and a life jacket for protection, just ___ you fall into the water.A. in case C. unless C. though D. as
The two ladies are ________ the same age, but there seems to be ten years ________ them.
The train ________ arrive at 11∶30, but was an hour late.
While building a tunnel through the mountain, ________ .
I planned ________ to see you last week, but I was ill.
Now then, children, Its time you ________.