It''s nearly seven o''clock . Jack ____ be here at any moment .
| A．must | B．need | C．should | D．can |
I saw him _____ behind the tree, thinking.
| A．sat | B．seated | C．seating | D．seat |
Maria would not go to the party, as she had no fine dress, no jewelry _____.
| A．to show | B．shown | C．showing off | D．to show off |
Would you like Helen _____ you since you have some difficulties?
| A．helping | B．to help | C．has helped | D．help |
Oliver climbed up the hill _____ swimming in the cold weather.
| A．to go | B．gone | C．going | D．go |
_____ the cap, I couldn't help _____ our team leader.
| A．To see； thinking of | B．On seeing； to think of |
| C．Seeing； thinking of | D．Seeing； to think of |