句意是“有五双可供选择，我拿不定主意从中选择哪一双”，而不是选择五双。

There are five pairs _______, but I'm at a loss which to choose.

youdao

句意是“有五双可供选择，我拿不定主意从中选择哪一双”，而不是选择五双。

There are five pairs _______, but I'm at a loss which to buy.

youdao

句意是“有五双可供选择，我拿不定主意从中选择哪一双”，而不是选择五双。

There are five pairs _______, but I'm at a loss which to buy.

youdao