According to a recent survey, Google Play is one of ________ apps in the world.According to a recent survey, Google Play is one of ________ apps in the world.

A. rise

B. rising

C. to rise

D. to rising

A. or

B. for

C. but

D. so

A. pack

B. to pack

C. packing

D. to packing

A. visit

B. visited

C. were visiting

D. have visited

A. knocks

B. is knocking

C. has knocked

D. was knocking

A. until

B. since

C. if

D. because

A. produce

B. produced

C. are produced

D. was produced

A. can

B. need

C. may

D. should

A. What

B. How

C. What a

D. How a

A. Thank you.

B. That’s fine.

C. Don’t worry.

D. I think it helps.