My friend ______ from the UK. She studied at Oxford for four years, during which we communicated with each other on the Internet.
You’d better water the flower in order to keep it __________.
Nowadays students have __________ homework to do every day.
Prince William __________the students playing football when he visited Shanghai.
You can’t take the two tickets, but you may take ____ of them.
A new teacher will come to teach _________ chemistry next term.