I had a little trouble _____ English grammar.A. learn B. learnedC. learningD. to
题型：同步题难度：来源：
| I had a little trouble _____ English grammar. |
A. learn
B. learned
C. learning
D. to learn |
答案
举一反三
| Animals don"t like ______ cages. |
A. live in
B. live
C. living in
D. living |
| The woman enjoys _____. |
A. sing and dance
B. sings and dances
C. singing and dancing
D. singing and dances |
| Let"s go _____ in the park. |
A. walk
B. walks
C. walking
D. walked |
| What about _____ our party later? |
A. began
B. beginning
C. begin
D. to begin |
| The girl is afraid _____. |
A. at fly
B. at flying
C. of fly
D. of flying |
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