I was really scared and I didn't know ___________ when I saw a snake that day.
A:how to do
B:when to do
C:where to do
D:what to do
有人说:“1901年,中国陷入无尽的黑暗中;1911年,一道闪电划过,却黑暗依旧;1921年,中国终于迎来了曙光”,1921年,中国迎来的“曙光”是指( )
⑴swim (现在分词)____ ⑵hobby(复数形式)____
⑶colour(形容词)____ ⑷photo (复数形式)____
⑸she(宾格形式)____ ⑹cry(现在分词)____
⑺that(对应词)____ ⑻smile(现在分词)____
⑼are(单三式形式)____ ⑽taking(动词原形)____