— Turn off the TV, Jack. ____ your homework now?— Mum, just ten more minutes, please.
| A．Should you be doing | B．Shouldn’t you be doing |
C．Couldn’t you be doing | D．Will you be doing |
We recommend you ______ at least 15 minutes before the start of your tour.
| A．arrive | B．arrived |
| C．will arrive | D．have arrived |
I also felt guilty, as all fathers do at a time like this, wondering whether there was anything I ______ to have prevented this situation from rising.
| A．would do | B．could do |
| C．can do | D．could have done |
Children are not born with their habits already _______.
| A．to make | B．to be made | C．making | D．Made |
This is your home, _______ you may treat it as.
| A．whenever | B．whoever | C．whatever | D．Wherever |
I recently read that it’s good to walk a lot; ______, I’m getting off the bus a few stops early and walking the rest of the way.
| A．however | B．therefore | C．instead | D．Otherwise |