摘要：36．You'd better look both ways before you the street． A．across B．cross C．crossing D．goes across
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You’d better look up the new word in a dictionary _____ you don’t know it ?
A．if B．that C．though D．whether
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I’m not sure about the meaning of the word. You’d better look it up in a (n) ______.
A. letter B. dictionary C. article
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You’d better look up the new word in a dictionary _____ you don’t know it ?
| A．if | B．that | C．though | D．whether |