— What are the _______ doing there?
— They are busy _______ their science experiment.
| A．Boys students; to do | B．Boy students; to do |
| C．Boys students; doing | D．Boy students; doing |
I am looking for a W.C , but I can’t find __________ .
| A．it | B．one | C．this | D．that |
Work hard __________ you will succeed .
| A．and | B．or | C．while | D．But |
If there __________ no buying and selling of animals , there __________ no killing .
| A．will be , is | B．will be , will be |
| C．is , will be | D．is , is |
When this term begins , the weather will be __________ .
| A．more and more cold | B．more cold and cold |
| C．cold and colder | D．colder and colder |
I want to watch Jurassic World __________ second time because it is a fantastic movie .
| A．the | B．a | C．an | D．/ |