Jack must be helping his grandma to water the flowers,______?
| A．is he | B．isn’t he | C．must he | D．mustn’t he |
------Why don’t we take a little break ? -----Didn’t we just have _______?
| A．it | B．that | C．one | D．this |
Mary is _____three sisters.
| A．the nicest of her | B．the nicer of the | C．nicer of her | D．nicer than her |
______enough time , he would sell the apples at half the price .
A .Not there being B. There being not C. There not being D. There wasn’t
Tom is _______John .
| A． so clever a boy as | B． so a clever boy as |
| C． as a clever boy as | D． as clever a boy as﹡ |
It was about 600 years ago ______the first clock with a face and an hour hand was made .
| A． that | B．until | C．before | D．when |