The _____of the 2019 Beijing International Horticultural Expo（园艺博览会） is "Live Green，Live Better"．（ ）
| A． |
symbol |
B． |
condition |
C． |
theme |
D． |
invention |
A little effort every day， you ______ a big difference． （ ）
A．makesB．madeC．have madeD．will make
What do you think of the boy？
He is ______ honest student today and ______ useful man tomorrow． （ ）
A．a； anB．an； aC．an； anD．a； a
Would you mind going to the park with us this Sunday？
_____．I haven't been outdoors these days．I can't wait．（ ）
A．Sorry，I can'tB．Sure，I'd love to
C．Certainly notD．My pleasure
The light in his office is still on．I wonder _______．
Maybe at midnight again．（ ）
A．if will he stop working
B．if he will stop working
C．when will he stop working
D．when he will stop working
Yesterday，Mr．Green went to his hometown and visited the old house ____ he was born in．（ ）
A．whichB．whereC．whatD．it