We should do more such exercises in the future, I think, _____ those we did yesterday.

you remember to give Jack the book—Yes, I gave it to him ______ I saw him.

I think you need more ________ before the competition,if you want to win.

Will you join us at the party next Sunday–I will join you if I ________ my work on Saturday.

_______ people went to the concert whichwas held in Gengsu Theatre ________ the night of April 1st.