Tom as well as his friends ____ to visit our school soon after they arrive in Changsha.
| A．is coming | B．are coming | C．will have come | D．has come |
By the time you ____ in, I ____ two letters.
| A．had come, had written | B．came, wrote |
| C．come, have written | D．came, had written |
To ____ your dream of becoming a scientist, you must work hard from now on.
| A．turn | B．recognize | C．live | D．change |
I suggest ______10% of the bill for the waiter or waitress if a tip isn’t included.
| A．to leave | B．leave | C．being leaved | D．leaving |
There are _____advertisements which encourage ______to participate in improving their neighbourhood.
| A．the public,the public | B．the public,public |
| C．public,public | D．public ,the public |