If they do not give us a treat, we can play a trick ________ them.
| A．at | B．on | C．for | D．to |
People hold Dragon-boat races __________ Qu Yuan on the 5th of the fifth lunar month.
| A．remembering | B．liking | C．in memory of | D．in the memory |
In a debate, you have to be clear of the ______ of the disabled children.
| A．forces | B． energies | C．powers | D．strengths |
I’ve tried my best and done quite well, but he ___________ faults with me.
| A．always finds | B． has always found |
| C．always found | D．is always finding |
--- Ought we _____ clean the class room today?
--- Yes, you _____.
| A．to; ought to | B． /; ought | C．ought; ought | D．/; ought to |