back to you before four in the afternoon，and I 78

The exhaust valve opens before bottom dead center in a four stroke engine to______Iallow f

听力原文：M: What do you usually do on Sundays？W: I usually go to church in the morning and

We will go to visit the museum this afternoon and I want you here by two oclock withoutA．f

I am so glad to be back again in San Francisco. Thank you for coming to the ______to meet

听力原文:Good afternoon and thank you for your warm welcome. This will be the first talk i

why did Mr.Rochester say ..and the you stab me in the back! the (7thpara.?A: because