Scientists have found it seems _______animals and humans are much alike than we thought.
| A．as though | B．even though | C．only if | D．even if |
Mr Li who is in _____ charge of our class is very experienced.
| A．the | B．a | C．/ | D．an |
He is a man of ____ and he had a lot of interesting ____ in his life.
| A．much experience, experiences | B．many experiences, experience |
| C．much experience, experience | D．many experiences, experiences |
I don’t think _____ possible to master a foreign language without much memory work and practice.
| A．this | B．that | C．it | D．/ |
Work hard at your lessons, ______ you’ll fail the exams again.
| A．and | B．but | C．or | D．which |
He devoted all the time _____ his research .
| A．to do | B．doing | C．to doing | D．did |