--- Why do you want the book?
---- _________, sir.
| A．Studying | B．Studies | C．To study | D．Studied |
Who do you guess _____ to the station to meet her?
| A．to go | B．going | C．to have gone | D．went |
What do you suppose _____ him think so?
| A．to make | B．making | C．to have made | D．made |
Who do you think _____the money?
| A．to steal | B．stealing | C．to have stolen | D．stole |
“I haven't heard from Henry for a long time.” “What do you suppose_____ to him?”
| A．was happening | B．to happen | C．has happened | D．had happened |
Many countries, for example, Mexico and Japan, _____a lot of earthquakes.
| A．have | B．having | C．to have | D．having had |