He decided to study hard__________ catch up with others.
Mary didn’t know who _______ the problem she met with at that time.
—_______ I wash the clothes now? —No, you _______. You _______ clean the room first.
—Mum, can I help you with the cleaning? —Thank you, dear. But you are ______ now. You must wait till you are _______.
I can’t remember when exactly the Robinsons left _______ city. I only remember it was _______ Sunday.
---Do you mind me opening the window ? ---______ .It’s so cold outside.