题目内容
When Peter speaks in public, he always has trouble _ the right things to say.
[ ]
A. thinking of
B. to think of
C. thought of
D. think of
B. to think of
C. thought of
D. think of
A
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When Peter speaks in public, he always has trouble _ the right things to say.
| A．thinking of | B．to think of | C．thought of | D．think of |
When Peter speaks in public, he always has difficulty ______ the right things to say.
|
A．thinking of |
B．to think of |
C．thought of |
D．think of |