So far, we haven’t had any evidence __________ this drug is effective.

A. which
B. that
C. what
D. where

Our two senior programmers __________ each other ever since they were at college.

A. know
B. knew
C. haveknown
D. areknowing

__________ the Internet is an important part of our daily life, about 3.9 billion people are still not online.

A. If
Because
C. Unless
D. Although

A modern city should provide an environment in _____information flows rapidly and easily.

A. which
B. what
C. that
D. where

No sooner had her finger hit “send” __________ she realized she had forgot to include the attached document.

A. when
B. that
C. than
D. after

Directions: There are 10 incomplete statements here. You shouldfill in each blank with theproperform of the word given in brackets. Write the word or words in the corresponding space on the Answer Sheet.We are excited to learn that all of our 5 drugs (approve) _________________ by the agency.

They believe that a picnic with friends is a way to have fun without (spend) _________________ too much money.

Most people believe that jobs like teaching still (large) _________________ depend on humans.

The report says that many small businesses have failed in their first year of (operate) _________.

Bob thought self-driving cars were actually (safe) __________ than vehicles driven by humans.