We work during the week，but weekends and evenings are usually ________

There are fewer and fewer tigers in India. The situation will continue ______ humans stop hunting them for their fur and bones.

Who is that young woman— She is ________ teacher. She teaches ________ English.

Our teacher told us that these exerciseswere __________.— Really

er what makes you a successful manager.—-I ______ as a waiter for five years, whichcontributes a lot to my today’s work.