Is this the leaning tower ___ Galileo did experiments centuries ago?

A. was

B. is

C. are

D. am

A. of talking back; to lose

B. of talking back; of losing

C. to talk back; to lose

D. to talk back; of losing

A. so as

B. that

C. so that

D. in order to

A. of speak

B. to speak

C. speak

D. to speaking

A. who

B. whom

C. which

D. whose

A. in the moment

B. the moment

C. the moment as

D. in the moment when

A. is standing

B. standing

C. stands

D. stand

A. be

B. am

C. was

D. were

A. The person

B. Anyone

C. Who

D. Whoever

A. seems

B. were

C. are

D. is