--- Excuse me, sir. Would you do me a favor? --- Of course. What is it? --- I _____ if you could tell me how to fill out this form.
A person , when_________,can often do what is normally beyond his ability.
Mark needs to learn Chinese ______ his company is opening a branch in Beijing.
The government has been accused of not responding ______ to the needs of the homeless.
A man is being questioned in relation to the _____murder last night.
_______ he didn’t help me with my work. Instead, just _______.