Question

-- You can use MSN to talk with Vivien on the Internet.
--- I know. But can you tell me ________?

A．when I can use it	B．what I can use it
C．why can I use it	D．how can I use it

Answer 1

A

本題考查賓語(yǔ)從句的用法，賓語(yǔ)從句要用陳述句語(yǔ)序，故排除C、D；因?yàn)閡se前有主語(yǔ)I，其后有賓語(yǔ)it，故不可用what引導(dǎo)，故選A。