摘要：4．This TV set is too dear, it gives you a better picture A．or B．if C．though D．and
网址：http://m.1010jiajiao.com/timu3_id_2413781[举报]
If you are not satisfied with this TV set, you can return it to us ____.
A. at a time B. at all times C. at any time D. at one time
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______ (How, Where) about this TV set?
It’s nice, but expensive.
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