单项选择题

Those factories use (both) chemical (or) mechanical (methods) (to manufacture) clear glue.

A．both
B．or
C．methods
D．to manufacture
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They sat (together) (to make) (a room) (for) an old lady.
A．together
B．to make
C．a room
D．for
单项选择题
The president (whom) the bank belongs, promised (to keep) all the board members (informed) of (how) the negotiations were going.
A．whom
B．to keep
C．informed
D．how
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