The designer has tried every possible way to make the robot light， so you _____ worry about its weight．（ ）
A．mustB．mayC．can'tD．needn't
High﹣speed trains are seen as one of the new Four Great_____of China．（ ）
A．AchievementsB．Agreements
C．EnvironmentsD．Inventions
Is everyone here， Jonathan？
No Sir． Millie is absent． She_____for two days．（ ）
A．has fallen illB．has been ill
C．fell illD．was ill
What do you think of yesterday's activity in your community？
Wonderful． A lot of useful advice on self protection________．（ ）
A．is offeredB．are offered
C．was offeredD．were offered
Would you like to go to the city and live with us， Granny？
Oh， dear， I'm used to the life in the country． I think life here is_____．（ ）
A．more comfortable
B．less comfortable
C．the most comfortable
D．the least comfortable
He_____like coffee． I see him drink a cup at times．（ ）
A．mustB．mayC．can'tD．mustn't