Jack must be helping his grandma to water the flowers, ________?
| A．is he | B．isn’t he | C．must he | D．mustn’t he |
---You could have asked your brother for help. He is good at math.
---Yes. A whole day________ .
| A．will waste | B．had wasted | C．was wasted | D．would be wasted |
---Does your brother always work so hard?
---Yes.______ he catches a cold or has a fever sometimes
| A．whenever | B．no matter how | C．even though | D．although |
---Was Tom there when you arrived?
---Yes, but he _______ home soon afterwards.
| A．had gone | B．has gone | C．is going | D．went |
What chance ______ of taking an earlier plane?
| A．is there | B．there is | C．it is | D．is it |
Standing on top of the building, ______.
| A．the whole city could be seen | B．nothing could be seen |
| C．we could see the whole city | D．all could be seen |