I ____at the door three times, but no one replied.

1. I ____at the door three times, but no one replied.

A. knocked B. amknocking C. haveknocked D. willknock

【考点】

一般过去时;

【答案】

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单选题普通

1. —Have you seen Jim today?

—Yes, I ____him this morning.

A. haveseen B. see C. willsee D. saw

单选题容易

2. —A butterfly ____ into my room. How did it get in?

—Nobody knows. Open the window and the door to let it out!

A. isflying B. wasflying C. flew D. willfly

单选题容易

3. —I was afraid to make the speech at first, but finally I ____ it.

—So you should believe in yourself.

A. produced B. managed C. realized D. refused

单选题容易