Be careful with the knife.You may hurt______.( )
himself
ourselves
myself
yourself
Jim _________ a lot about Chinese culture since he began to study in our school.
learns
learned
will learn
has learned
I ________ about my sister when my phone rang. It was her!
think
will think
was thinking
am thinking
Don’t lose heart. If you keep working hard, you _________ some day.
will succeed
succeed
succeeded
have succeeded
The workers _________ the community center now.
cleaned
were cleaning
will clean
are cleaning
Mr. Smith has helped me a lot, _________ I’m thankful to him.
or
but
for
so