It has been announced that all the students ______ put on the masks before going to school in case they are infected with SARS virus.
—— How ________ can you finish the drawing? —— In a week.
We decided not to climb the mountains because it was raining ___.
If we work with a strong will, we can overcome any difficulty, ___great it is.
She smiled to the people around but___looked straight ahead, getting hold of her son’s hand.
He’d like to sleep with the window ____ at night.