| A．right | B．left |
| C．this | D．that |
| A．on； for | B．in； as | C．on； with |
| A．were； was | B．were; were | C．was； were |
| A．smoking | B．smok | C．smoke |
| A．Did； visited | B．Did； visit | C．Do； visited |
| A．had; riming | B．have； running | C．had； running |
| A．eat； ate | B．eat； eated | C．ate； ate |
| A．What; collect | B．What; collecting |
| C．How； collecting | D．How； collect |
| A．Do; in | B．Did; on |
| C．Does; in | D．Do; on |
| A．on； at | B．to； at |
| C．to； in | D．on; for |
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