The research showed beyond ________ that smoking contributes to heart diseases.
| A．wonder | B．doubt | C．problem | D．use |
How can I ________ money from my bank account to his?
| A．transfer | B．transform | C．transmit | D．transplant |
For our middle school students, some courses are compulsory, while others are ________.
| A．flexible | B．optional | C．impressive | D．significant |
Someone is ringing the doorbell. Go and see ___________.
| A．who is he | B．who he is | C．who is it | D．who it is |
One ought __________ for what one hasn’t done.
| A．not to be punished | B．to not be punished |
| C．to not punish | D．not be punished |
Luckily good things _________ here to save local wildlife.
| A．are doing | B．are being done |
| C．had been done | D．will do |