.
How ___ I help them to understand when they won’t listen to me?
| A．can | B．would | C．may | D．must |
She spent four weeks which she could afford _______ around the country, promoting her new album.
| A．to tour | B．toured | C．touring | D．having toured |
It is said that people are________ likely to tell lies over the phone as they are in emails.
| A．as twice | B．twice as | C．twice more | D．twice than |
His suggestion made me angry, but _______.
| A．making others happy | B．to make others happy |
| C．others happy | D．with others happy |
Generally speaking, my grandmother is nice and kind, but she _______ be very
stubborn at times.
| A．should | B．shall | C．must | D．can |
Most animals have little connection with animals of a different kind, _______ they hunt them for food.
| A．if | B．while | C．unless | D．as |