In such dry weather the flowers will have to be watered if they _____.
| A．have survived | B．would survive | C．are to survive | D．will survive |
As a punishment she was not permitted __________ part in any school activity in a week.
| A．taking |
| B．to take |
| C．take |
| D．to be taking |
I hurried to the airport only __________ the plane I was to take had just taken off.
| A．to find |
| B．finding |
| C．found |
| D．having found |
It is difficult __________ a best friend.
| A．finding |
| B．found |
| C．to find |
| D．find |
The play had been on for 10 minutes but I was still unable to find a seat __________.
| A．to sit |
| B．to sit on |
| C．sit |
| D．sit on |
__________ the early train, you'll have to get up ear-ly and rush in a taxi.
| A．Catching |
| B．Caught |
| C．To catch |
| D．Catch |