﹣Yuan Longping， a famous Chinese scientist， is now doing research on sea rice．
﹣If farmers____ start planting rice in salty water， China's food supply will surely rise．（ ）
A．canB．can'tC．mustD．mustn't
__________
I am． I want this pair of shoes， please．
Sure． That's ¥180．（ ）
A．Do you sell jackets？
B．Who's next， please？
C．Is there a shop near here？
D．What can I do for you？
All children are __________ the day when they can go back to school．（ ）
A．looking upB．taking care of
C．taking outD．looking forward to
We will make fewer mistakes __________ we are careful enough．（ ）
A．as long asB．so thatC．as far asD．even if
So far， the number of people using 5G mobile phones __________ a lot．（ ）
A．is increasingB．are increasing
C．has increasedD．have increased
Dear friends， do you still remember why you came here three years ago？
To __________ our dreams!（ ）
A．copyB．saveC．imagineD．achieve