—— What do you think made the girl so glad?
—— ＿＿＿＿＿ a beautiful necklace.
| A．As she received | B．Receiving | C．Received | D．Because of receiving |
Hurry up!The train ______. You know it ______ at 8:30 am.
| A．leaves; leaves | B．is leaving; is leaving | C．leaves; is leaving | D．is leaving; leaves |
In recent days ,with the help of our teacher , I have made ___ great progress in _____mathematics.
| A．a; the | B．/ ;/ | C．/ ; the | D．a ; / |
Mrs. Green always helps her mother even though going to work _________most of her day.
| A．takes out | B．takes down | C．takes up | D．takes off |
We have to admit that the biggest___________ facing the ecosystem is limited resources and the worsening environment.
| A．mission | B．challenge | C．scale | D．contribution |
Your task will be to examine the___________ of constructing a new factory in the United Kingdom.
| A．motivation | B．appointment | C．adjustment | D．possibility |