问题
                    
I became a teacher ten years ______. I have been a teacher _______ 2008.
                            A:ago; for
B:before; since
C:ago; since
D:ago; in
                        
                        B:before; since
C:ago; since
D:ago; in
正确答案是:
                        
                        
                        
                    同类题型
                    I’d like to eat these candies. They taste _________.
Lucy, let me __________ a look at your new watch.—Ok, dad.
Robert, I failed again!—Don’t worry, you’ll get chosen for the team. ___________.
______ are you buying so much food?—Because your uncle is coming for supper.
It is dangerous _______ the children _______ play near the deep water.[ ]