| A．falls | B．falling | C．fall. |
| A．quite | B．quiet | C．quietly |
| A．thinking | B．think | C．thinks |
| A．as | B．for | C．by | D．like |
| A．successful | B．success | C．successfully | D．succeed |
| A．success | B．succeed | C．successful | D．successfully |
| A．work | B．worked out | C．work out | D．do out |
| A．to work | B．work with | C．to work with | D．to work out |
| A．which | B．that | C．who | D．whom |
| A．Li Bai | B．Edison | C．Newton |
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