___________ his poem, he didn’t dare to submit it to the professor.
| A．Not having polished | B．Having not polished |
| C．Not polished | D．Not being polished |
Could you write me a letter ＿＿＿?
| A．when will you get home |
| B．when do you get home |
| C．when you will get home |
| D．when you get home |
I remember that ＿＿＿＿ an old church on the top of the hill many years ago.
| A．used to be there | B．there used to be | C．there used to have | D．there had |
—— The water changes into thick ice covering rivers and lakes in winter in Harbin.
—— ＿＿＿＿ in Urumqi and children go skating on it then.
| A．So is it | B．So it does | C．So it is | D．So does it |
Henry often helps look after Granny Wang,but＿＿＿.
| A．seldom is George | B．seldom George does |
| C．seldom does George | D．seldom looks George after Granny Wang |
＿＿＿,we could forgive him for his mistakes!
| A．Were he still a child | B．If he is still a child |
| C．Is he still a child | D．He were still a child |