--Do you know what caused the accident? --- No, not yet. The matter _____.
A. is being looked into B. was being looked into C. looked into D. is looked into
A new museum is being built in our city and it’ll be accessible to the citizens when___ next year.
A. completing B. is completed C. to be completed D. completed
Robert failed to complete his education____ he found it hard to focus on his studies.
A. although B. if C. because D. while
We live in a society_____ there is a great deal of debate about competition.
A. which B. where C. when D. that
--- What have you learned from your experience in Japan?
--- Well, meeting people from another culture ___ be very difficult.
A. must B. can C. should D. shall
According to the survey, modern industry_____ quickly in developing countries in the past half century.
A. develop B. has developed C. had developed D. developed
