I don’t know _____ tomorrow. Can you tell me?
A. when we started B. when did we start
C. when we will start D. when will we start
My father didn’t go to bed ______ he washed his car last night.
A. until B. after C. when D. since
We can’t do two things _____.
A. all the time B. on time C. at times D. at a time
Jim’s shirt is made _____ silk , and it’s made ______ china.
A. in, of B. from, of C. of , in D. from , in
No smoking, please. It’s ____ the rules.
A. against B. for C, on D. at
Although we are young, ______ we can still do something to help them.
A. but B. / C. and D. however
