We generally have four people working in the shop, but at ____ periods we employ extra hands.
A、top
B、rush
C、tip
D、peak
3.In each of the following groups of words, there are four underlined letters or letter combinations marked A, B, C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation.
A、useless
B、endless
C、unless
D、hopeless
The sweater she received in the end differed ____ the one she had seen online.