__________ are good friends .
I ________ speak English in class because I’m afraid of making mistakes. —Don’t be shy. Believe in yourself and everything will be OK.
_____do you sleep every day?—For about ten hours. [ ]
In hot summer, we should pay attention to protecting ourselves __________ strong sunlight.[ ]
We had to spend three more hours waiting in ______cafe at the airport because _______ flight was delayed.