He looks worried．I wonder he has already known about the result．（ ）
A．whereB．whetherC．why
Could you tell me how to pay for the food by QR code（二维码）on the phone？
．（ ）
A．Take it easyB．It doesn't matter
C．You're welcomeD．Sure． I'd love to
If you keep practising speaking French every day， you'll be better at it．
．（ ）
A．Practice makes perfect
B．Many hands make light work
C．Put all your eggs in one basket
D．Burn the candle at both ends
Excuse me． would you please tell me the nearest post office？
Certainly． Walk across the road and turn right， and you'll see it．（ ）
A．when can I get toB．when I can get to
C．how can I get toD．how I can get to
The professor reached Nanjing last Wednesday． He there for 10 days．（ ）
A．has beenB．has got
C．has reachedD．has arrived
My sister is planning to have a second child next year．
good idea it is!（ ）
A．WhatB．What aC．HowD．How a