Ⅰ.单句语法填空
1．He often asked me the question________the work was worth doing.
答案： whether
2．I have no idea __________ I can operate the new machine，so I will ask Mr White for guidance.
答案： how
3．The news __________ Donald Trump had won the election excited his supporters.
答案： that
4．Frankly speaking，there is not much hope ________ they are still alive.
答案： that
5．The manager didn’t answer the question _______ would take his place.
答案： who
6．The fact has worried many scientists __________ the earth is becoming warmer and warmer these years.
答案： that
