It is really a challenge for me to finish it. In order not to be disturbed, I spent three days ______ in my study surfing the internet to do the research.

It is really a challenge for me to finish it. In order not to be disturbed, I spent three days ______ in my study surfing the internet to do the research.

#96822

locking

locked

to lock

lock

下一题

推荐题目

To get an education, _______.

#98213

working hard is very important

working hard is needed

one must work hard

it is needed to work hard

——I’m going to Shanghai to attend an important meeting tomorrow. Do you have anything __________ to your brother?——Thanks a lot. I’m considering how to do it.

#96489

to take

to be taken

taken

being taken

 The traffic rule says young children under the age of four and ____ less than 40 pounds must be in a child safety seat.

#91900

being weighed

to weigh

weighing

weighed

With so many difficult problems ______, the manager felt worried all the time.

#97073

settled

having settled

settling

to settle

Heroes are those who，given a choice between doing the right thing at great personal cost or the wrong thing for great personal benefit，＿＿＿＿the former.

#90897

choose

chosen

choosing

to choose