— I called you at six last night, but you didn’t pick up.
— Oh, I ________ my mom ________ in the kitchen.
| A．helped; to cook | B．helped; cooking |
| C．was helping, cook | D．was helping; cooking |
We usually have our school tripa morning of April1st.
| A．in | B．at | C．to | D．on |
He hasegg andhamburger.
| A．an, an | B．a, a | C．an, a | D．a, an |
Not everyone knows_____they want to be.
| A．what | B．how | C．where | D．why |
Science is _____ difficult for some students ____ learn, so many of them don’t like it.
| A．enough, to | B．too, to |
| C．so, to | D．much , to |
---What are you doing?
---I’m_____my English book. But I can’t find it
| A．looking | B．looking for |
| C．looking after | D．reading |