English for all levels

Choose the correct answer from a, b, c, or d:

 

1. 1. Many doctors .............. long hours to care for patients over the years.
   1.   a. have worked
   2.   b. has worked
   3.   c. are working
   4.   d. will work
2. 2. Some nurses .............. the same patients for weeks.
   1.   a. support
   2.   b. have been supporting
   3.   c. supported
   4.   d. will support
3. 3. Hospitals .............. their emergency systems recently.
   1.   a. are improving
   2.   b. have improved
   3.   c. improve
   4.   d. will improve
4. 4. Patients have ............. better care and faster treatment.
   1.   a. received
   2.   b. are receiving
   3.   c. will receive
   4.   d. have received