If nothing _________, the oceans will turn into fish deserts.
| A．does | B．had been done |
| C．will do | D．is done |
Franklin’s ability to learn from observations and experience _____ greatly to his success in public life.
| A．owed | B．contributed | C．attached | D．related |
I can’t stand ___ with Jane in the same office. She just refuses ____ talking while she works.
| A．working; stopping | B．to work; stopping |
| C．working; to stop | D．to work; to stop |
Liu came _____ first by two seconds, breaking _______ record set by Li last year.
| A．the ; / | B．/; the | C．the; a | D．/; / |
This programme became more popular after it _______the best TV Show of the Year.
| A．was award | B．was awarded | C．had been award | D．had been awarded |
It’s nice to see you again. What _____ since we last met?
| A．have you done | B．had you done | C．have you been doing | D．did you do |