_______ the fact that his original experiments had failed, ProWhite stuck to his research

Chinese students are good at taking exams and you can’t imagine what they are willing to to succeed.

_______ you _______ to see the film last night —Yes, I did.

The research group produced two reports based on the survey, but has any useful______________ suggestions.

do you think of his speech at the court—Er…, sorry, I ________ about something else.