The astronaut did many experiments in the spaceship,__________________much help for knowing space.
A. which we think it is B. which we think are of
C. of which we think is D. I think which is of
Once ____________ , a plan should be carried out.
A. make B. making C. made D. to make
—"How do you like the book?"
— "It's quite different from I read last month."
A. that B. which C. the one D. the one what
He failed in the examination, ________ made his father very angry
A. which B. it C. that D. what
I had _________good lunch at ________ restaurant __________ we met for the first time.
A. a, a, which B. the, the, where C. a, the, where D. \, the, that
They would be good friends _______ he saw her at the party.
A. for the first time B. first time C. the first time D. it’s the first time
