Such a problem is＿＿＿＿difficult for a primary school student ＿＿＿.
| A．so； to work | B．very too； to work out |
| C．rather too； to work out | D．quite too； to answer |
A teacher’s ________ to education is worth great respect of the whole society because it brings benefits to the development of society.
| A．devotion | B．principle | C．identity | D．guidance |
I need a friend with whom ____ my sorrows and happiness.
| A．sharing | B．to share | C．to spend | D．spending |
With the rapid development of medical science, we ________ more new drugs used in the treatment of cancer.
| A．see | B．had seen |
| C．will be seeing | D．would see |
If I could change something in my life, I’d change it so that my childhood would _______ in another area.
| A．have been taken place | B．have taken the place |
| C．have taken place | D．have been taken the place |
______, your composition is full of mistakes.
| A．Writing carelessly | B．Written carelessly |
| C．Having written carelessly | D．Being written carelessly |