——Has your friend completed his design? ——Not yet. He ________ on it last night.

题型：单选题题类：常考题难易度：容易

——Has your friend completed his design?

——Not yet. He ________ on it last night.

A、worked B、has worked C、is working D、was working

举一反三

{#blank#}1{#/blank#} at eleven last night?

—She was in the library, but she ________ any books.

— I {#blank#}1{#/blank#} (take) a shower. But I called you back as soon as I got out.

—Sorry, I didn't know you _________ the washing machine.

—She is really a nice teacher.

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