1. Apple Computers ---- the share of the market held by Microsoft in the late 1990s but unfortunately they didn't have a clear business plan to more ambitiously pursue their business goals.
could capture
needn't have captured
should capture
might have captured
might capture
2. Many immigrants now agree that they ---- their traditions when they first settled in America.
shouldn't have given up
don't have to give up
may not have given up
might not give up
needn't give up
3. Although working conditions ---- in many occupations in the past few years, one can never be safe, particularly in places with higher risk occupations.
might improve
can't have improved
may have improved
could improve
needn't have improved
4. A good supervisor ---- with people who attempt too much than with those who try too little because hard-working staff contributes much to all aspects of work.
shouldn't work
would rather work
had better not work
is not able to work
can't work
5. If you want to get a good night's sleep, you ---- any tea or coffee in the evenings.
would rather drink
don't have to drink
mustn't drink
were able to drink
could drink
6. Road conditions ---- much in the last fifteen years, since the government hasn't invested anything to renew the roads.
must have improved
needn't have improved
didn't need to improve
ought to have improved
can't have improved
7. A new report suggests that a vaccine that offers at least partial protection against HIV ---- available in the near future.
had to be
could be
used to be
might have been
would rather be
8. He ---- technical support when his computer broke down because he doesn't know much about computers.
must have had
needn't have had
can't have had
didn't have to have
shouldn't have had
9. The new steam powered and mechanized farm equipment .... the work easier but they couldn't get it to work.
was able to make
can't have made
didn't have to make
might have made
had better make
10. If you plan to take a long trip in the car, you must get a full tank of gas or you ---- out of gas.
have to run
should have run
had better run
might run
are used to running
1. Apple Computers ---- the share of the market held by Microsoft in the late 1990s but unfortunately they didn't have a clear business plan to more ambitiously pursue their business goals.
could capture
needn't have captured
should capture
might have captured
might capture
2. Many immigrants now agree that they ---- their traditions when they first settled in America.
shouldn't have given up
don't have to give up
may not have given up
might not give up
needn't give up
3. Although working conditions ---- in many occupations in the past few years, one can never be safe, particularly in places with higher risk occupations.
might improve
can't have improved
may have improved
could improve
needn't have improved
4. A good supervisor ---- with people who attempt too much than with those who try too little because hard-working staff contributes much to all aspects of work.
shouldn't work
would rather work
had better not work
is not able to work
can't work
5. If you want to get a good night's sleep, you ---- any tea or coffee in the evenings.
would rather drink
don't have to drink
mustn't drink
were able to drink
could drink
6. Road conditions ---- much in the last fifteen years, since the government hasn't invested anything to renew the roads.
must have improved
needn't have improved
didn't need to improve
ought to have improved
can't have improved
7. A new report suggests that a vaccine that offers at least partial protection against HIV ---- available in the near future.
had to be
could be
used to be
might have been
would rather be
8. He ---- technical support when his computer broke down because he doesn't know much about computers.
must have had
needn't have had
can't have had
didn't have to have
shouldn't have had
9. The new steam powered and mechanized farm equipment .... the work easier but they couldn't get it to work.
was able to make
can't have made
didn't have to make
might have made
had better make
10. If you plan to take a long trip in the car, you must get a full tank of gas or you ---- out of gas.
have to run
should have run
had better run
might run
are used to running
