Writing out all the invitations by hand was more time-consuing than we             .

will except

are  excepting

except

had excepted

考查時態(tài)。句意：手工寫下所有的邀請函要比我們預料的花去更多的時間。根據(jù)句意可知我們預料是在實際上寫之前發(fā)生的，而本句中實際寫花去的時間使用了過去時was，所以expect用過去完成時。故D項正確。

The question of           English will keeping on changing in the future is easy         .

if; to answer

whether; to be answered

if; to be answered

whether; to answer

考查賓語從句和非謂語動詞。句意：英語將來是否會繼續(xù)變化這個問題很容易回答。第一空為賓語從句，從句中不缺少成分，表示“是否”，應用whether，if 引導的賓語從句不能充當介詞的賓語，故排除A和C；第二空，這是be +性質形容詞+不定式結構，這種結構中形容詞說明不定式的特性，句子的主語是不定式的邏輯賓語。故選D項。

When Huawei P20 came out,         people couldn't wait to buy one in our town.

thousand

thousands

thousand of

thousands of

考查數(shù)詞的用法。句意：當華為P20上市時，成千上萬的人迫不及待的想在我們鎮(zhèn)上買一臺。thousnad意思是“千”，其前有具體數(shù)詞修飾時，用其單數(shù)形式；當其前沒有具體數(shù)詞修飾時，用其復數(shù)形式，且與of 連用，thousands of“成千上萬的”，這里沒有具體數(shù)詞修飾。故選D項。

Only then_______ how much damage had been caused.

she realized

she had realized

had she realized

did she realize

“only＋狀語”位于句首，整個句子用不完全倒裝．此外，由then可確定用過去時態(tài)．

My mom suggest that we           eat out for a change this weekend.

should

might

could

would

考查虛擬語氣。句意：我媽媽建議我們這周末出去吃飯換換口味。suggest作“建議”時，后面的賓語從句要用虛擬語氣（should）+動詞原形。故選A項。