Over the past 40 years, 29 other Chinese people ____ Mount Qomolangma successfully.
| A．climbed | B．have climbed | C．had climbed | D．climb |
.To improve your health, you can _________ 25— 30 minutes three or four times a week to do simple things such as walking ,cycling or running .
| A．give off | B．turn down | C．take over | D．set aside |
There is even an animal whose tail will so that it can run away if someone grabs it.
| A．break up | B．break out | C．break off | D．break down |
Founded by Li Kaifu in September 2009, Innovation Workshop is committed to help Chinese young people create successful starting-up companies
| A．commented | B．confirmed | C．concluded | D．committed |
The director added a few characters and changed some names in this movie but _______ this is a true story.
| A．completely | B．necessarily | C．essentially | D．gradually |
— Why do English people talk so often about the weather when they start a conversation?
— Well, it’s probably the weather is a(n) __________topic.
| A．safe | B．ordinary | C．primitive | D．conventional |