Many a young scientist ________ engaged in the research work.
A: have
B: has
C: have been
D: has been
A: have
B: has
C: have been
D: has been
举一反三
- Many a student in my class ______ America. A: have been to B: have gone to C: has been to D: has gone to
- Many a plan ______ to fight against pollution. A: have been worked out B: have been worked on C: has been worked out D: has been worked on
- Many a student_____________plant trees. A: has been sent to B: have been sent to
- All possible means __________ been tired.Every possible means __________ been tired. A: have，has B: has，has C: have，have D: has，have
- 12. Many a student ________ the importance of learning a foreign language. A: have realized B: has realized C: have been realized D: has been realized