They came to the conclusion ________ by a computer.
| A．that not all things can be done | B．because of not all things be done |
| C．being not all things can be done | D．because not all things can be done |
______ with so much trouble, we failed to complete the task on time.
| A．Faced | B．Face | C．Facing | D．To face |
________ , some famous scientists have the qualities of being bothe careful and careless.
A Strangely enough B Enough strangely C Strange enough D Enough strange
Paper money was in ______ use in China when Marco Polo visited in ____ thirteen century.
| A．the;/ | B．the, the | C．/, the | D．/, / |
By midnight the floor was wet with beer. One young technician slipped and bumped into another. They struggled, ________ trying to get the other in a head-lock.
| A．every | B．all | C．everyone | D．each |
Only later, after the alcohol had had its less effect, ________.
| A．the conversation had deepened | B．had the conversation deepened |
| C．the conversation deepened | D．did the conversation deepen |